Big wierd problem

I’ve had a problem for a long time now…
The big picture is that my comp freezes after a little gaming… Warcraft , Q3 and other Q3 graphic engine games. But only when im using XP…

Spec: P4 1.6
256 PC2700
P4S333
Geforce4Ti4200
Sblive 1024
D-link ethernet card

I’ve tried to use a lot of different drivers and the same thing happens…
I’ve tried to use a lot of different grapih cards… also ATI cards… the same happens.
But it is only when im using XP. All´the games run weel under win98se
HELP ME PLZ

Plain and simple…

Use Windoze 98 then…