pfclassic

Hey guys... just got my new computer... but im having issues with it. While playing Dark age of Camelot (mmorpg) im getting random freezes... The whole system will freeze up, cant move cursor, ctrl alt delete, alt tab, cant do any of those. The only thing i can do is reboot my computer manually. I am pretty sure its not an issue with the game because it is very random... no specific point, sometimes it will happen after 5 minutes of play, sometimes after an hour. My Specs:

Amd 4200+ dual core
Asus A8N-SLI motherboard
2 gigs (2x1 gig) kingston pc400 ram
ati x1300 video card (256 megs)
western digital 250 GB 7200 rpm 16 meg cache HD

Anybody have any ideas as to the problem? If somebody could point me in the right direction that would be great