I got the rev C2 model. Installed the driver and appliation software from the CD (1.01b). Don't see the IR running, so I downloaded the software (ir32.exe and Irblast.exe) from Hauppauge website and install it again. The IR program does not seem to start up at boot up. I have to restart it manually using restart IR program. After the installation, I got the restart/stop IR program on my Start->All programs->Hauppauge WinTV program group. When I run the restart IR, a little remote icon shows up on my XP system tray. I then tried to use the Blastcfg program to configure the remote, it does not seem to do anything. Tried leaning mode, and it always returns an error. The red probe on the IRBlaster does not blink when I press the send channel command from the program. I tried this on two PCs, XP and Vista and got exactly the same result. Please help. Other than that, it is a great unit. It records fine and the media files plays on my IStarHD media player. Thanks in advance for anyone who may have suggestion on things that I can try.