Video Memory Manager BSODs

last night i received this blue screen again while exiting WoW. however, once my laptop rebooted, the resolution was changed to 1440x900 and the icons on my desktop relocated themselves (this was due to the change in resolution i think; not that it really matters anyway).

i am currently using the 174.74 drivers from laptopvideo2go and have been for almost 2 weeks. i received this BSOD once before, again while exiting WoW, while using the 169.09 drivers from laptopvideo2go. i assumed when i received this BSOD the first time that it was the drivers that were at fault, so i quickly went to 174.74 because from what i was told/what i read, they were very stable... and they seem to be.

this quite possibly can be a WoW related issue, but my laptop was pretty warm when i received this bluescreen. i don't know what the temperature was when it shutdown on me, but i'm assuming it wasn't more than 80 C because i've monitored the temps before and they never went over 81 C, even when playing crysis.

i guess it's safe to say it's WoW's fault (what else is new, this game causes all sorts of errors), but i'm still wondering if i should buy a laptop cooler. i'm looking at the zalman one that is being talked about in other threads, but people have said it's unnecessary for a t61p. is it really that useless? does anyone have it for their t61p and does it show a decrease in temperature?

i don't want to shell out $40 for a laptop cooler if i'm not going to benefit from it.

thanks for the responses in advance ^_^

EDIT: i'm almost certain it's a WoW problem... lots of people seem to encounter this BSOD upon exiting the game. i think it has to do with WoW+nvidia drivers+Vista 64 (this seems to be what the majority of the people complaining have, but i have vista 32bit).