Your problem is the Intel Extremely (Crap) graphics chipset.
Its a low cost method of building a graphics card into a motherboard.
Low cost limited ability, good for word processing etc and crap for gaming.
You need to find out if your motherboard has either an AGP slot (brown in colour) or a spare PCI slot (white in colour).
AGP is better and nearly all graphics cards now use this.
PCI slot for graphics cards is an older standard than AGP and as such few cards are made to still suit this.
You can find some but generally they are slower than an AGP card but they would be infinitely better than your current graphics solution.
Check Pyro's recommendations for cheap graphics card here,
http://www.hitechcreations.com/forums/showthread.php?s=&threadid=117776any of these will get you running IF you have the slot to fit them in.
It should be said you can get much better cards than these but of course at a cost.