You should get one of those clearanced wireless Logitechs that they made for the PS3. Shit even has a track pad built in so you don't have to
around with a mouse if you're sitting on a couch or something. They're USB, not Bluetooth so they're Plug and Play with Windows too. Wal-Mart had them for $25 here, Best Buy had them for the same price around January when they put them on clearance. Shit's YMMV though.
EDIT: N/M I thought you were trying to use it like an HTPC.

EDIT: N/M I thought you were trying to use it like an HTPC.