Bornyo, this is what you need:

Canon EOS Rebel XSi/450D Kit $900
Canon 430EX Speedlite Flash $255
Vertical Battery Grip $130
Flash Add-On Thingy $30
Extra Batteries $20
B+W UV Filter $35
OpTech ProLoop Neck Strap $25
Two 4GB SDHC Card $50
Gepe CardSafe Extreme memory card wallet $15
Lowepro Pro Mag 2 AW Camera Bag (Black) $110

All totals to $1540 so with taxes it will be around $1700