Thanks for the explanation, it's been very helpful.

I have recently bought a new iMac (iMac13,2) without a built-in Apple IR Receiver. 
So, I ordered an IR USB Receiver (OVU412002/00 HK 03 50742 G) online. 
I downloaded Remote Buddy Trial, because I want to make sure it works before I purchased the license. 
I installed the driver (Candelair) & ran Remote Buddy, but I encountered the same problem George did.

I checked to see if the hardware is recognized & it is listed in the System Information:

Windows Media Center IR Transceiver: 
Product ID: 0x2093 
Vendor ID: 0x0471 (Philips Consumer Lifestyle BV) 
Version: 1.01 
Serial Number: BKHG 
Speed: Up to 12 Mb/sec 
Manufacturer: 
Location ID: 0x14100000 / 2 
Current Available (mA): 500 
Current Required (mA): 100

I would like to test my hardware with your pre-release in order to make sure it works. Could you please help?

Thank you in advance,

Regards, 
Pinar Karan