Cellularfactory.com has the Universal Computer Remote Control for $6 with free shipping with coupon code 10Z7KN. Supports most media players including WinDVD, WinAmp, Media Player, and even the hated RealPlayer.
Cellularfactory.com has a Universal Multifunction Computer Remote Control for $8 with free shipping with coupon code free0510 [Exp 5/10]. Allows you to control Windows Media Center, Media Player, RealPlayer, WInDVD, and PowerDVD. Compatible with Windows 2000, XP, MCE, and Vista.