I wasnt aware of the ATI hotfix, ill check that out for sure. That really sounds like the problem! thanks man
@RazberyBandit - you do sound pretty doom and gloom^^, but im not worried. First of all SC2 wont run less than 1024x768. Second im in the beta and I can play it pretty well on medium settings. Im certain a graphics card upgrade will have me playing smoothly, although you might be right about the HD2400, I was planning on buying a new one anyway - but didnt want to before I knew about possible compatibility issues..
Wish I could buy a new system but thats a chunk of cash I dont have yo
Thanks for the help anyway