Errmmm... yeah.
You need to get setup in a good PSPDev environment, install the latest PSPIRKeyB Lib with the added Belkin driver and compile piKey.
You could do that, or you can just politely email me with a request for the latest piKeyIR.PRX file.

When I manage to get on my dev PC, drop me and email or MSN me and I'll send you the working file! (Look on my personal profile.)
I belive it's that file that's also fixed the IRDA game issues.

Thanks for the support guys!