Change permission for folder

[Bad boy Warrior]

I want to restrict everyone from using their system drive © as its annoying me with the crap they put on there.

Ive removed everyone out of local admin groups via policy and i had to put them into power users as a certain program they all use ceases to function correctly. I found out if i gave modify rights JUST to that folder the i can remove them from power users but the question remains is there a way (other than manually) to set the security rights for a folder within program files folder i.e. c:\program files\application - needs to be done via GPO if possible or if you ahve any other ideas?

Cheers guys

[fizban2]

http://support.microsoft.com/default.aspx?...KB;EN-US;825751

xcacls might be a way to go