diff --git a/README.md b/README.md
index 2efad7f..cb7e5e3 100644
--- a/README.md
+++ b/README.md
@@ -3,4 +3,14 @@ a basic powershell script using PowerCLI to set some basic configurations for ES
 
 If you have a small environment or do not use Enterprise Plus licensing (for Host Profiles), this script can help automate some basic configurations that may be the same across a number of hosts.  It can be easily extended to add other configuration items or adjusted to meet the needs in your environment
 
+DISCLAIMER - This runs in my lab and should run in most environments.  Please test thoroughly.  Feel free to change/modify/copy code as you see fit.
 
+Written to run on a single host after it has been initially installed.  It was not designed to run against vCenter itself
+  - use root credentials when prompted
+  - Must create vSwitch before running (designed for virtual standard switches)  
+
+Customizing for your environment
+1. Change the VLAN definitions to match your environment - note a vlan of 131 is added as portgroup called vlan131 with a VLAN ID of 131.   If your environment uses different conventions, you can adapt the script in a number of ways
+2. If the portgroups should be added to vSwitch other than vSwitch1, you need to update that in the "#Add port groups" section below
+3. update the $NTPserver variable to your preferred value
+4. update the $SyslogServer variable to your preferred value. this script uses UDP.  Can change to TCP in #Syslog section below