Right. the latest drivers.
But anyway, half of the problem is solved. I posted a support ticket on Sapphire's site and i got a quickly reply, telling me that Vista should run fine and they gave me the link to their latest driver, which actually it was already on installed. Still, i've uninstalled everything, and installed again. The problem was still there. I posted a reply, and after that, they told me that actually, on my system Vista is not that good and to try it on XP. This time, they gave me more details. They told me to instal Via 4in1 and after that to install their driver. I did that and.......voila. XP is fine, the games are fine and I'm happy. Now i just have to see if I can find a compatible Via 4in1 for Vista and maybe that will do the trick for Vista too
Thank you all for your reply's.