Not sure which generation you have, Hance. There are three of them, and there are batteries available for generation 1 and 2 here:http://www.ifixit.com/iPod-Parts/iPod-Touch
No replacement batteries for gen3 there though. They also have guides for most things including your battery:http://www.ifixit.com/Guide/Browse/iPod_Touch
Ubergerbil, you're usually much more helpful and much less of a troll, so I'ma let that slide.
edit: I have purchased replacement parts for reviving previously-dead Macs in the past and they've been good to me, but I've not dealt with any iPod part replacements.