NerdDinner.csproj won't load in vs2008 sp1 with .net 3.5 sp1. Am I not up-to-date on these tools or something? It complains this project type not supported on this installation.
Do you have the ASP.NET MVC Framework installed? If not, you need it. NerdDinner is an example of an MVC Framework project, and you won't be able to open it or run it without the ASP.NET MVC Framework installed.
You can find the appropriate installation information at http://www.asp.net or more specifically http://www.asp.net/mvc