How can I change the location of the TEMP=C:\Windows\Temp folder?

Hi! We’re having problems in our organization. It seems that the screensaver that is to be deployed can only be ran by users who has Modify access to Temp folder (C:\Windows\Temp). We’ve tried scripting/GP to add the Users Modify to the folder but it just didn’t work. Here is what happened:

Reset computer.
UserA logs in. Users has modify in temp
UserA logs off.
UserB logs in. User doesn’t have modify in temp.

Now my other solution is just to change the location of the temp folder and just put it in the directory of the user logged on. That way, he’ll have full control over the folder. Is this possible? Can this be done via script? Thanks!