The most important thing in a graphics card is the core. Your core is a 9600GT, which is perfectly decent: http://www.notebookcheck.net/Mobile-Graphics-Cards-Benchmark-List.844.0.html
Now you won't be playing the newest games on good settings, but most games will play on low and older games (like Portal, for example) should play with pretty high settings.
The list linked above compares notebook graphics cards. Here's a more general comparison that includes desktop cards: http://www.tomshardware.com/reviews/best-graphics-card-gaming-performance,3042-7.html