imac with a pc wireless keyboard?

Hi,

1st post asking for help! Long term ibook / imac user without too many problems so far! However..

I've an iMac Mac OS X, version 3.9 with an English keyboard.
I need a French keyboard and having no money asked around. A friend has given me a 'wireless twintouch multimedia keyboard and mouse' by genius, complete with its start-up disc for windows XP/Me/98/2000.

Any chance I can get this keyboard to work with my iMac?

Thanks for your help.

 

Nothing to plug in, it's wireless.
Batteries charged up, current key board unplugged, new one put near, machine started up then nothing....
Keyboard/mouse don't work and nothing opens on screen to set anything up.
Any ideas?