best artist graphic card for pci-express x16 slot?

..ive rebuilt my computer ( and got adapters for the NEW ide to sata connections thingys that all these new fangled boards have )

only now I need a graphics card.. and I have a pci-express x16 slot (*is reading that off the box*) that I THINK is where a graphics card is supposed ta go...

only I dont know the difference between a pci-express x16 or pci 2.0 or whatever... and I really dont know that difference between what vidio card is really good for the money as far as computer art and what not is considered...

sooo.. anyone have any ideas on a good graphics card under 200 u.s. dollers taht will fit in a pci express x16 slot ???

*Bump.*

* skulks away*

I think Technical Issues section will probably be a better place to ask.