Hi...I'm still very new to Kixtart! I've come across the exact same problem. I work in a school, so the teachers want to stop the students from changing their desktop wallpaper.

Now, I have their Policy set up so that they shouldn't be able to change their wallpaper...however they still find a way!

So I added to my (still work in progress...learning every day) kix login script the line "setwallpaper...." however that also doesn't work.

Then I did what you did - set the script to edit the local registry. However, like you say it only works when run after logon.

Now, what I want to ask you is: Are your users running mandatory or roaming profiles? The users here are using roaming profiles - I have a feeling this might be the source of the problem. (Although I'm probably wrong. )

Please let me know if you find a solution!