Are you using a machine that comes with Front Row pre-installed - or 
did you install Front Row yourself. For the latter case, Andrew 
Escobar's method is the only one I do test.

While AE's solution has it's own set of issues attached to it, Remote 
Buddy knows and works around them. Other solutions, especially those 
that ask youto modify the Info.plist file of a kernel extension to 
fake an IR receiver are neither officially supported nor recommended.

Best regards, 
Felix