Well, to find the On_enter script for a module, using whatever preferred tool of yours, either KT, Erfedit, ect... you would:
1. extract the .are file from the module you are planning on editing,
2. open it with a GFF editor and look for the On_Enter field,
3. and find and extract the script named in the onenter field
2. rename the script you just extracted to something else: exmaple old__a_306onenter.ncs
3. Create a new script:
Renaming the script doesnt exactly take any modding experience, and
i already went over the threads lots of time. I just dont get this part
Since you've read those threads i assume you can make a script, If not, look here:
http://www.lucasforums.com/forumdisplay.php?f=597)
Hope I could help!