January 2007 Orcas CTP: Don't bother
I spent the better part of a day downloading and setting up the
new Orcas in anticipation of playing with .NET 3.0 and 3.5 (Greenbits). Unless you want to play with Entity Framework in its "Raw" format (no visual designer) stay away from this download - its problems are
detailed here. The bottom line is its not configured to do .NET 3.0 development. I just don't really see any reason why this CTP release was even attempted. Let's hope the February CTP is a lot better.