Are you stuck @ 128MB of Hypermemory after a clean install of Vista, here's a workaround to fix this? I downgraded to XP MCE 2005 (it came with my Gateway MX6447 Notebook) then I set my Hypermemory in the ATI/CCC to 256MB of Hypermemory form 128MB, then I upgraded to Vista (doing a inplace upgrade form XP MCE 2005) and after the Vista Upgrade, I'm Stuck at 256MB of Hypermemory, (I rather be stuck at 256MB than 128MB of Hypermemory) so, this WORKS, and in Vista, I now have much improved Graphics functionally, you cannot change this back to 128MB of Hypermemory unless you downgrade back to XP MEC 2005, this is not a real fix to the probelm, but it's a wrokaround (untill ATI/AMD get's better hypermemory driver support in Vista) this will also improve your Vista Base Score as well, but you must have at least 2GB's of DDR 2 Memory installed, I hope this helps others out that have less-than-perfect ATI/Graphics after a Vista Clean install, remember, this only works, after doing a inplace upgrade to Vista from XP MCE 2005 
I think this should be a sticky, it may help others with the same problem 

LOOK HERE: http://www.dslreports.com/forum/remark,18029846


LOOK HERE: http://www.dslreports.com/forum/remark,18029846





this will work in XP ONLY