The Web-GUI testing support requires a selenium-rc version that isn't released
yet. So yo must get it via the OpenQA oficial Subversion repostiory:
 
svn co https://svn.openqa.org/svn/selenium-rc/trunk
 
To build it you need to get Maven: 
 
http://maven.apache.org/download.html
 
Once you have maven, uncompressed and with the JAVA_HOME variable set properly
get in to the trunk of selenium-rc and then into the selenium-server directory 
and do:
 
/path/to/maven/bin/mvn install
 
This process could be long. I hope soon we'll have a selenium-rc Debian
package to avoid this :)
 
Move the generated file target/selenium-server-VERSION-SNAPSHOT-standalone.jar
to a better place (and name) and finally specify the path of your recently 
obtained .jar into the ANSTE config.
 
Something like this in /etc/anste/anste.conf:
 
[selenium]
rc-jar = /home/josh/selenium-rc/selenium-server.jar
browser = *firefox /home/josh/firefox/firefox-bin
 
You should also specify the path of your browser in this manner.
 
Good luck!
 
You can contact me on <jacalvo@warp.es> and I'll try to answer your questions.