Seriously, to underscore what HBOC said - the 300D's interface was just horribly, horribly slow. We bought one for work back when I'd just purchased a Nikon D70 for myself - it's absurd how slow that camera's (the Canon) interface was.
Avoid the original Digital Rebel like the plague. It will drive you nuts. If you want to go Canon, don't go any earlier than the 350D.