Mac Keyboard doesn't work in Windows Bootcamp

Hello

I have a new new I mac and am new to Apple software. I have partitioned the harddrive with bootcamp to play my old Windows games.

The wireless keyboard does not function when the windows operating system is used. Yet my old microsoft wireless keyboard and mouse works in the Apple operating system.

Many of the other "utilities" seem to be working, wireless network etc.

Any help would be appreciated.