Had a lot of trouble getting the Meade Autostar Updater software to work on my laptop with Windows 7 x64 using a USB->Serial adapter.
Clicking connect instantly gave me the error "Could not find COM Port. Check your connection and try again"
I ended up doing the firmware upgrade with an XP PC using the same serial adapter and it worked fine. The TimeIsMotion software itself runs just fine under Windows 7 x64, again using the same adapter.
Might be worth adding some notes here ( http://www.openmoco.org/node/25 ) as for a long while I though I was making the cable incorrectly.