I experimented with a couple of versions of Mobipocket on my dual boot XP/Vista laptop. Here are the results.
- If Mobipocket 6.0 is installed on Windows XP, the Kindle will be recognized and it's PID will be captured.
- If Mobipocket 6.0 is installed on Windows Vista, the Kindle will not be recognized at all and you will be asked to attach your handheld device... incessantly.
- If Mobipocket 6.2 is installed on Windows Vista, the Kindle will be recognized and and additional drive but no PID will be captured.
If you're running Vista, try to install Mobipocket on an XP machine with your Kindle attached long enough to get the PID. That way you can run 6.2 on your Vista machine and just fill in the PID you got from the XP machine.