Heh.
I said a couple of weeks ago that they'd raise the minimum system requirements to at least p2 400, and I wasn't wrong by much.

The official minimum is now "a pII system with more than 300mhz". How tricky. what comes after 300? 350?
Yup, by the time the game'll be out, we'll be at 400. Guaranteed. ;)

Anyway, check out the new FAQ at http://www.sorcerers.net/Games/NWN/nwnfaq.htm

Ack! I swear, if those jokers with all their new fangled watch-a-ma-dizit 3-D graphics keep me from playing NWN, I will be so pissed. I'm barely skirting the requirements as it is, and I really don't want to invest in a new graphics card or any such stuff. Ah, well, such is the way of the cheap computer :(

I should have no problem, hehe LOL
You could always OC your system a wee bit.
Check out http://www.sharkyforums.com in the OC forum for advice.