I have a 20D and a 10D. I bought them at a Professional Wolfe/Ritz Store, locally because I know they will stand behind them, take them back if I didnt like them etc. I dont believe the prices were much different from the online prices. If somone in Dallas knows exactly what they want, I think Competitive Cameras might be a touch less expensive. I am not sure about their return policy.
The standard lens is pretty lame but then again its pretty cheap too. I use my D20 with other EF lenses.
The cameras, both of them, are amazing. Sturdy, fast and put out great photos.
It can output to a PC using the USB2 cable. Canon has a wireless device too but it is rather expensive. I've never seen one work but supposedly it can be used on the 20D that has been updated with appropriate firmware.