Okay thank you all for the support  I'll try these workarounds!

Ok thank you, so there's no solution. Is it possible to run it as admin without clicking on the uac? And without disabling it?

...for speech found. If you are sure you have languages installed that support speech recognition, then you may need to run as an administrator." (see attachment)

If I run it as admin, all works fine. The problem is that I've installed it in C:\VoxCommando for NOT executing it as administrator (as the installer says). Why is it asking this? I've installed all the Microsoft Speech runtime component needed (core, SR and TTS voice), in fact VoxCommand works with that, but requires admin. Can anyone help me? Should I change installation folder or what?