Actually it might be possible to run VoxCommando 2 on Windows Server...
VC 2 will have a choice of an alternate speech recognition engine which you download and install, as opposed to the built-in desktop engine which ships with Vista, 7 and 8. The alternate engine has some pros and cons as compared to the one we use now, but this might be one of the pros.
I say possible, because I think it will probably work, I really don't see why it would not, but it has not been tested yet.