We just completed our UDS migration to .NET and to my surprise the thing is working better then UDS in terms of hardware requirements. Sure nothing can come close to UDS but the conversion was a relatively straight forward experience.
Lets hope Sun does the right thing and let us have the source code so we can take this software to the next level.
When MS centric I think that .NET is not a bad choice. Any .NET on a UNIX box in your migration ? I think the best would be ObjectiveC 2.0 (thanks to Apple cash/tech injection into Forté at the beginning) but no one is with me on that one ... I wonder why???