We will soon release the next version of Charity Engine, which includes the option of running GPU apps for extra credits. It's based on BOINC v7 instead of v6.
If you are already running BOINC v7 (with CE as the Account Manager) and would like to help us test the first GPU apps, please drop us a line at this page.
There may be special extra prize draws for beta testers... ;)
For future note: Users can opt-in to beta testing via their profile settings: http://www.charityengine.com/account/settings