How do i know if my computer has a 128MB Video Card with support for Pixel Shader 2.0?

I need to know if my computer has this b/c i just bought the new Sims 3 game for PC and it wont let me install it. Help?|||Go to http://www.systemrequirementslab.com/ref… look for The Sims 3 (under T) and the site will tell you if your computer can run it, including the video information. (It analyzes your computer.)