Looking for a RF/bluetooth remote for a PC that's small enough to fit in my pocket. I need at least 6 buttons that I can customize to make global hotkeys, which will be used with several applications, including a handful of media players and a text-to-speech program. I'll have on wireless headphones, and will sometimes be using this remote in other rooms than the one that the PC is in.

Ideally, the remote would have software (Windows XP/Vista/7) that would let me assign a custom hotkey to each button. It doesn't have to do fancy macros and such, or be able to recognize what application has the focus... I can use Autohotkey and program all of that myself.

I've looked at several 'presentation' devices, but all of them seem geared toward working with Powerpoint (and a few with basic media controls), but I can't find one that has customizable buttons. And the majority of them seem cheaply made and not very reliable to begin with.