Thank you for your awnser trp-25, but i did try to run a program i made (really simple one) on a other pc with XP-Pro installed, but it did not work... do you have a clue why that is ?
I suppose its possible the framework installation was on XP,
though I could have sworn that it was. In any case, if you
distribute an application, I would always recommend including
the framework files (though thats about 20 MB)

actually Win95 is not supported at all. .NET wont install on it. Only 98 and up.
I know that the Visual Studio won't work with Windows 95, but
when I was writing .NET apps during Microsoft's beta testing
process, there was a set of framework files for Windows 95. If
that's changed, then its news to me.