I second that. I've been using the Packard Bell IR receiver with a small Clarion remote, and it works perfectly. A great deal for just a few bucks, as long as you remember to flush the software that comes with it down the toilet
Fully custom Linux-based system on an '89 VW GTI 16V Wolfsburg Edition
Dual in-dash CD-ROMs, jogdial volume control, Sony joystick on the steering column, IR remote...
and still more HP than MHz