I'm getting tired of my camera because of the fact that anything over a simple ISO 200 appears super grainy. I also want a better camera.
Should I buy the Digital Rebel XT (not the XTi), and should I get some new lense with it? At newegg they have it for $619 + a 18-55mm lense.
I don't have all the money now, but maybe I will soon.
Nothing else but a 512MB card

There are many, many better lenses but personally I just think it's hard to beat at that price. I still think it makes a great extra lens.
