Hello I am an engineering student with a student copy of SW2010.  The issue I am having, which I assume is due to my system, is little gray squares popping up in my viewscreen when I move the camera or create an extrusion.  What part of my system needs to be upgraded to correct this?

Specs

Asus P7P55 Deluxe MB

WD VelociRaptor 350gb HD

Intel Core i7 860 processor

XFX Radeon HD 5770 Graphics Card

2GB Corsair RAM