microsoft universal mobile keyboard

Hi folks,
a sited friend of mine found me the Microsoft universal mobile keyboard on sale,
I baught it thinking it would be simple,
but now I can't figure it out.
Does anyone have one or know of a podcast on how to set it up for the different operating systems.
My friend does not live in my same state.
So he can't hel;p.
Any information would be helpful I don't even know how to turn it on.
Thanks
Carlos