Services for Unix is a tool that is generally thought of as a migration tool. This new version comes with a fully compliant POSIX subsystem that runs on NT, NT 2000 AND XP. This vesion of Unix is called Interix and includes both the C and Korn shell along with inproved Network File System services. It is priced at $99.
Microsoft has also ported .NET to FreeBSD. Does this growing acceptance of variants mean a kinder gentler strategy to co-exist with Unix or is a Fox in the Hen House kind of thing.
It took 4 years for anyone to even trust FP extensions for unix after one whole, then another was found. It will be a lifetime before I install .NET on my unix servers. They write that crap to contain wholes that gain them extra PR, couz they love the good and the bad. (personal opinion ;) )