You should post some pictures!Send a PM to Reactor Worker. He's selling his GTX 260 for $120 with the warranty.
Is that better than my 5770?
Marginally better.
What case is it?
Oh sorry, I thought I already linked to it.http://www.newegg.com/Product/Product.aspx?Item=N82E16811146064&cm_re=Hades-_-11-146-064-_-Product
If I can fit two GTX280s in an Antec 900 you should be fine.