I installed Boot Camp, then Windows Server 2003, then tried to boot that installation from Parallels (build 3120) and it says I'm trying to boot a partition with an unsupported OS and that I might corrupt the partition if I go any further, etc, and gives me an option to click "Ok" or "Cancel" and that's it. Parallels just won't boot it. If I restart the MacBook I can still boot directly into Windows so the partitions appears to be fine so far. What am I doing wrong? Isn't build 3120 suppose to allow this? Or does it only work with XP at this point?