I was wondering if there is a 1GB PCI graphics card with DDR and Shader 2 or higher

Of course. Look at the ATI (or sapphire) radeon 5770. It has 1gb ddr5 (which is much better than ddr) and shader 4.1 support. it is a really good card for budget gaming. For top performance get the radeon 5970, which has 2gb ddr5 memory , and it is a lot faster and a lot more expensive. The nvidia equivalents (which I don't know the names for) are just as good, but I'm unsure on the pricing and I have never used an nvidia card before.