Maybe it is an obvious thing to say, but it is the cable that came with your 7D to download pictures to your computer. Perhaps you always taken out the card to download pictures?
If you have never used your EOS Utility I would suggest updating your firmware if you have an older 7D.

Also, when I downloaded FoCal a few months back I entered the three serial numbers of my cameras on the site. I had one serial number wrong FoCal would not read that camera. If you have plugged it in and there are no cameras recognized check your account at Reikan and make sure you have the right serial number entered.