Well, I decided to throw Vista back on my home machine after reading on the AMD ATI site that the horrible blue screen issues have been resolved. After Vista was installed I then downloaded the ATI Catalyst 7.5 installer from the ATI site. After the installation was complete I noticed that my screen got a little darker. I saw some other folks out there having the same issues. Luckily the blue screen issue was resolved in version 7.4, which is what I downloaded and installed. I have left my machine up for over 24 hours without issues and the darkness was no more.
For now I would stick with ATI Catalyst 7.4. Good luck. Sounds like ATI/AMD really need to do a little more testing before releasing the final versions.