I installed .NET 4.0 and VS 2010 RC on my laptop and MSBuild was automatically installed. I was hoping to build a continuous integration server by just installing the .NET
If you're looking for msbuild, you'll find that for 4.0 it's at:
For 32-bit:
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
For 64-bit:
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe