Metropol

Does anyone know how I find out the Mac number for a Windows PC?

Cheers m'dears.

Click Start > Run..
Enter "msinfo32" and click 'OK'
Expand 'Components'
Expand 'Network'
Select 'Adapter'

Information about the installed network adapters (including their MAC address) will be displayed in the panel on the right.

Alternatively, rather than waiting (and waiting) for msinfo32 to do its thing, just go to a command prompt (type "cmd" after clicking Start|Run) and type "ipconfig /all" - the physical (i.e. MAC) addresses will be shown for each network card in your system.