[CMake] How to change the .NET Framework version used in C-Make?

[Carlos Torres - ebudae 3D]

Hi all,

I'm trying to generate a VTK project for Visual Studio 2010 with C-Make 
using the .NET Framework 3.5. I have installed in my computer .NET 
Framework 3.5 and .NET Framework 4.0, but C-Make always take the 4.0 
version. How can I change the version of the framework used in the 
generation of the project?

Thanks.