Sorry, should have added the following:

gog.com version (1.004a)
WinXP
Macbook Pro 2.53 GHz
4GB RAM
Nvidia 9400 video

And before the Mac haters chime in, this is my first Mac and I've built HUNDREDS of PCs myself and I'd have to say the Mac has been the most stable Windows PC I've ever owned (and that's saying a lot.) I still love my gaming rig, but for solid system stability my MB Pro rocks.

I was running the game for awhile on my gaming rig (Win7, i7-860, 4GB RAM, Radeon 5850) but it was crapping out so often that I was hoping it would run better on the "true" XP install on the MB Pro. It has a little, but it still crashes quite often.

Here are the most notable crashes that are repeatable:

The lizard mages do a melee attack on my skeleton wall (I'm an archer with skele wall distractions.)
Pretty much any spell like effect (I try to freeze them and then kill to avoid spells even though Freeze is totally broken i.e. makes the game TOO easy and I'm playing on HARD level.)
The head named orc in the orc camp would cast a spell (froze and killed him so he wouldn't cast to get past that.)

I don't really want to start over, especially seeing this could happen again.

Thanks again