diff --git a/install/mushclient.nsi b/install/mushclient.nsi
index abf5fc7a..fbe51a7a 100644
--- a/install/mushclient.nsi
+++ b/install/mushclient.nsi
@@ -380,6 +380,7 @@ Section "Plugins"
   File "..\plugins\ATCP_NJG.xml"
   File "..\plugins\Summary.xml"  
   File "..\plugins\Code_Chart.xml"  
+  File "..\plugins\Config_Option_Changer.xml"  
 
 SectionEnd
 
@@ -539,6 +540,7 @@ Section Uninstall
   Delete "$INSTDIR\worlds\plugins\ATCP_NJG.xml"
   Delete "$INSTDIR\worlds\plugins\Summary.xml"  
   Delete "$INSTDIR\worlds\plugins\Code_Chart.xml"  
+  Delete "$INSTDIR\worlds\plugins\Config_Option_Changer.xml"  
   
   ; locale stuff
   
diff --git a/plugins/Config_Option_Changer.xml b/plugins/Config_Option_Changer.xml
new file mode 100644
index 00000000..5ba6558a
--- /dev/null
+++ b/plugins/Config_Option_Changer.xml
@@ -0,0 +1,221 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!DOCTYPE muclient>
+<!-- Saved on Monday, August 09, 2010, 10:29 AM -->
+<!-- MuClient version 4.56 -->
+
+<!-- Plugin "Config_Option_Changer" generated by Plugin Wizard -->
+
+<muclient>
+<plugin
+   name="Config_Option_Changer"
+   author="Nick Gammon"
+   id="edb75e5e80221bfb1a83a234"
+   language="Lua"
+   purpose="Changes options not available in GUI configuration"
+   date_written="2010-08-09 10:28:14"
+   requires="4.50"
+   version="1.0"
+   >
+<description trim="y">
+<![CDATA[
+Type 'config_options' to see dialog of options to change.
+]]>
+</description>
+
+</plugin>
+
+
+<!--  Aliases  -->
+
+<aliases>
+  <alias
+   script="config_options"
+   match="config_options"
+   enabled="y"
+   sequence="100"
+  >
+  </alias>
+</aliases>
+
+<!--  Script  -->
+
+
+<script>
+<![CDATA[
+
+-- See: http://www.gammon.com.au/forum/?id=10430
+
+-- alpha options they can change
+alpha_options = {
+  editor_window_name      = { desc = 'Name of external editor window' },
+  script_editor_argument  = { desc = 'External editor argument' },
+  } -- end alpha_options
+  
+  
+-- boolean options they can change
+boolean_options = {
+  auto_resize_command_window            = { desc = 'Auto-resize command window?' },
+  default_alias_regexp                  = { desc = 'New aliases: default to regular expression?' },
+  default_alias_expand_variables        = { desc = 'New aliases: default to expand variables?' },
+  default_alias_keep_evaluating         = { desc = 'New aliases: default to keep evaluating?' },
+  default_alias_ignore_case             = { desc = 'New aliases: default to ignore case?' },
+  default_trigger_regexp                = { desc = 'New triggers: default to regular expression?' },
+  default_trigger_expand_variables      = { desc = 'New triggers: default to expand variables?' },
+  default_trigger_keep_evaluating       = { desc = 'New triggers: default to keep evaluating?' },
+  default_trigger_ignore_case           = { desc = 'New triggers: default to ignore case?' },
+  do_not_add_macros_to_command_history  = { desc = 'Do not add macros to command history?' },
+  do_not_show_outstanding_lines         = { desc = 'Do not show outstanding lines count?' },
+  do_not_translate_iac_to_iac_iac       = { desc = 'Do not translate IAC to IAC IAC?' },
+  play_sounds_in_background             = { desc = 'Play sounds in background?' },
+  send_keep_alives                      = { desc = 'Send keep-alives?' },
+  } -- end boolean_options
+
+-- numeric options they can change
+numeric_options = {
+  auto_resize_minimum_lines   = { desc = 'Auto-resize: minimum lines', min = 1, max = 100 },
+  auto_resize_maximum_lines   = { desc = 'Auto-resize: maximum lines', min = 1, max = 100 },
+  default_alias_send_to       = { desc = 'New aliases: Default send-to location', min = 0, max = 14 },
+  default_alias_sequence      = { desc = 'New aliases: Default sequence', min = 0, max = 10000 },
+  default_timer_send_to       = { desc = 'New timers: Default send-to location', min = 0, max = 14 },
+  default_trigger_send_to     = { desc = 'New triggers: Default send-to location', min = 0, max = 14 },
+  default_trigger_sequence    = { desc = 'New triggers: Default sequence', min = 0, max = 10000 },
+  } -- end numeric_options
+  
+  
+function edit_boolean_option (name)
+  local val = GetOption (name)
+  local info = boolean_options [name]
+  local default = 1  -- default to "Yes" button
+   
+  -- if option not set, default to "No" button
+  if val == 0 then
+    default = 2
+  end -- if
+
+  -- what do they *really* want?
+  local response = utils.msgbox (info.desc, "Change option", "yesnocancel", "?", default )
+  
+  -- notify if switched
+  if response == "yes" and val == 0 then
+    SetOption (name, 1)
+    ColourNote ("cyan", "", "Option " .. name .. " changed to: Yes")
+  elseif response == "no" and val == 1 then
+    SetOption (name, 0)
+    ColourNote ("cyan", "", "Option " .. name .. " changed to: No")
+  end -- if  
+  
+end -- edit_boolean_option
+
+function edit_alpha_option (name)
+  local val = GetAlphaOption (name)
+  local info = alpha_options [name]
+
+  local response = utils.inputbox (info.desc, "Change option", val, "Courier", 9)
+  
+  -- if not cancelled, and value change, notify them
+  if response and response ~= val then
+    SetAlphaOption (name, response)
+    ColourNote ("cyan", "", string.format ("Option %s changed from '%s' to '%s'", name, val, response))
+  end -- if  
+  
+end -- edit_alpha_option
+
+function edit_numeric_option (name)
+  local val = tonumber (GetOption (name))
+  local info = numeric_options [name]
+
+  local response = utils.inputbox (
+              string.format ("%s\r\n\r\nRange: %i to %i", info.desc, info.min, info.max), 
+                             "Change option", val, "Courier", 9)
+  
+  if not response then
+    return
+  end -- cancelled
+  
+  -- check numeric
+  n = tonumber (response)
+ 
+  if not n then
+    utils.msgbox ("You must enter a number", 
+                  "Incorrect input", "ok", "!", 1)
+    return
+  end -- if
+  
+  -- check in range
+  if n < info.min or n > info.max then
+    utils.msgbox (info.desc .. " must be in range " .. 
+                  info.min .. " to " .. info.max, 
+                  "Incorrect input", "ok", "!", 1)
+    return
+  end -- if
+                   
+  -- notify them if value changed                 
+  if n ~= val then
+    SetOption (name, n)
+    ColourNote ("cyan", "", string.format ("Option %s changed from %i to %i", name, val, n))
+  end -- if  
+  
+end -- edit_numeric_option
+
+function config_options (name, line, wildcards)
+
+  repeat
+    local choices = {}
+    
+    -- build table of choices, with existing values
+    
+    -- alpha
+    for k, v in pairs (alpha_options) do
+      local val = GetAlphaOption (k)
+      if val then
+        choices [k] = string.format ("%s (%s)", v.desc, val)
+      end -- if exists
+    end -- for alpha_options
+    
+    -- boolean
+    for k, v in pairs (boolean_options) do
+      local val = GetOption (k)
+      local yes_no = "Yes"
+      if val == 0 then
+        yes_no = "No"
+      end -- if
+      if val then
+        choices [k] = string.format ("%s (%s)", v.desc, yes_no)
+      end -- if exists
+    end -- for boolean_options
+  
+    -- numeric
+    for k, v in pairs (numeric_options) do
+      local val = GetOption (k)
+      if val then
+        choices [k] = string.format ("%s (%i)", v.desc, val)
+      end -- if exists
+    end -- for numeric_options
+        
+    -- choose one ...
+    local result = utils.listbox (
+        "Choose an option to edit.\r\n\r\nClick Cancel when done (any changes will be retained).", 
+        "Options", choices)
+  
+    -- if not cancelled, go to appropriate handler
+    if result then
+      if alpha_options [result] then
+        edit_alpha_option (result)
+      elseif boolean_options [result] then
+        edit_boolean_option (result)
+      elseif numeric_options [result] then
+        edit_numeric_option (result)
+      end -- if  
+    end -- if they chose something
+   
+  until not result  -- loop until dialog cancelled
+  
+end -- function config_options
+
+ColourNote ("cyan", "", "Type 'config_options' to view options dialog.")
+
+]]>
+</script>
+
+
+</muclient>