>Dear Friends,
>
>I am looking out for unique identifier of machine for example.
>
>Processor Serial No.
>Mac Address
>
>Or something like that.
>
>Any ideas ?
>
>Thanks
>winan

Depends on your license policy it could be:
Mac address - per Network machine (not PC only)
Hard Disk Serial ID - per Disk license
What exactly you want to achieve?