Software Title: Disable or Enable Data Execution Prevention (DEP)
Download Link: http://www.tweaking.com/content/page/disable_or_enable_data_execution_prevention.html
Contact Them: http://www.tweaking.com/forums/
License: Freeware Tools, Not sure if they will be in the future so grab them now!
This will allow a user to easily turn DEP on or off. DEP can cause some programs to crash, and as such you may need to turn it off. As a plus, for system where DEP is grayed out by windows, you can still enable DEP with this tool. DEP will still be grayed out, but it will be working.
Personal note: I have to keep DEP off on my system for some older programs that I use will work. With DEP on these older programs crash.