Can I set the platform toolset from the command line when building with VS2010's msbuild?
===

When I'm building a VS2010 with msbuild from the command line, can I change the platform toolset to v90 (i.e. Visual Studio 2008 toolchain) from the command line, without editing the vcxproj file?

I'm using the following command line in my build script currently:

    mysystemf("msbuild %s.vcxproj /t:rebuild /p:configuration=release,platform=%s", prjname, platform);