>BTW, I highly recommend getting the VS Productivity Power Tools. In VS 2010, Tools > Extension Manager. It includes a replacement for the Add Reference dialog that actually works. There are other things too in it that are definately worth getting this free add-on.
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>>Hay gang,
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>>Recently I started using VS 2010 (.NET 4.0). I opened a copy of a VS 2008 (3.5) project in VS 2010 and walked through the upgrade wizard. (By the way, make your own backup, and don't let the wizard do it. Cause the compiler to get confused.) Anyway, Everything went smoothly. I thought. But when I started to try and use something new namespaces that came with .NET 4.0, all the dialog (namely Add Reference) still indicate the project is a .NET 3.5. Can someone please point me some documentation describing how to truly change the project to be a 4.0 project.

Here is another cool one. I attended two Code Camp sessions on Saturday that featured it. To be honest I could only follow about half the content but it was mentally stimulating. Most of the attendees were .NET folks, many of them half my age, and some of them were racing as hard as I was to keep up. Well, not quite as hard.

http://structuremap.net/structuremap/