City Interactive Games and Vista

Hello

I have had problems playing two of the latest point-and-click game
from City Interactive with Vista

Chronicles of Mystery: The Scorpio Ritua
Art of Murder: Search for the Puppetee

Both games install and load properly into the system. However, as soo
as you start playing the game, whenever the character wants to go an
talk to another person in the game, everything suddenly freezes

I emailed City Interactive with this problem, and they told me t
change my Sound Acceleration through dxdaig. After some confuse
searching for dxdaig, and then a little hunting online, I found that yo
CAN'T change the sound acceleration with Vista, and that I should rever
to XP if I want to play these games

Has anyone been able to find a solution to this problem in Vista, or d
I have to revert to XP?

HELP

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Piscesis83