Have you tried setting XP compatibility mode?

http://www.howtogeek.com/howto/windo...tibility-mode/

"Game errors on vista." Game errors on
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when i try to play a game ( that runs on windows XP )
i can't run it on vista.
when i start them up, some of them lagg, others crash and others kep
falling
out during gaming.

any example games.

Age of mythology titans
peter jackson king kong

the only game that seems able to run is
warhammer 40000 dawn of war. ( expansion )

does anyone has a solution for this problem ?
feel free to respond.