Hi, I purchased Windows 7Upgrade Family Pack. This entitles you to three computer installations. Two installs are complete. I also installed it on my own PC, but prior to activation I purchased an upgrade key to the Ultimate version, which was successful. I then activated my copy AFTER Ultimate install. My question is am I entitled to the third install from Family Pack, or is it used up? I only have one Ultimate key which I used on my PC. Thanks in advance.