I've e-mailed IRClone to tell them that the driver on the FAQ/XP Setup page points to an out of date driver (D10504.zip).
The driver in the released version of the software (1.13.00) includes the new driver, but if you're using the beta version (2.00), you're going to need D10606.zip available
here.I don't know what the effects might be if you've installed SP2. I haven't done that yet.
Use this driver and see if you still have a problem. Uninstall the old driver and IR-Clone software first!!