Another future canon junkie in the making. Your first DSLR? Are you getting just the 400D body or the kit lens and body? You should check out this link to POTN. It's a canon forum which will probably end up convincing you into parting with a buch of money for some really expensive glass. I recently ordered the 70-200 f/2.8 L IS, should be here monday. I'm not ordering any more lenses for a while, or at least until my bank account recovers.
Check out the transportation section
http://photography-on-the.net/forum/