Can't uninstall CS6 and CS5 isn't working either.

I downloaded the Web and Design CS6 without realizing that my computer doesn't have the minimum requirements.  I need to uninstall the programs, but none of them will even launch, including the uninstaller, because my computer can't support them. 

I'm also trying to get Photoshop CS5 to work, Dreamweaver CS5 works - but the program isn't booting properly.  When I look at the task manager, I see the Photoshop process start and get up to about 10,500 K and then it disappears.

I'm using Windows Vista and my screen resolution is 1366 by 768. 

Thanks a lot for your help.

Jeff