I received this for Christmas and just went through setting it up. I'm using Win 7 32bit. I used the supplied disk that came with the unit, it connected, updated and installed ok. I set up my Home location and 4 other cities. (Make sure that you install
the batteries in both the Main Unit and USB transmitter. Hook the main unit power supply into an AC outlet also.) Make sure the USB RF transmitter is plugged into an USB port on your computer, make sure that Windows installs the driver, then press the Transmit
button on the bottom of the USB RF transmitter.
After that press the PC search button on the back of the Main Unit and you should see the RF antenna signal indicator flash. The time should display in about 5 minutes....then wait 30-45 minutes for the unit to do it's intial data update before you actually
see all of the data on the Main Unit display. The data slowly gets added to the display the first time it's in use. (An indication that the data is being sent is the red LED flashes once on the top of the USB RF transmitter unit.)
Also it might help to have both units in fairly close together, maybe 2 feet or so for the first use. Then try more distance after that. I don't know how well this unit works with other potentially interfering devices. But so far it's in my computer room
with my wireless router, and wireless home phone.