>>>>Hi All,
>>>>
>>>>I am looking for a 32 bit integer that is unique to each machine. I thought that the GUID, as part of it, had a unique machine identifier.
>>>>
>>>>Thanks in advance.
>>>
>>>I would also try for the MAC address of the network card - but I don't know how to obtain it. Please note that (a) not all machines will have a network card, but perhaps you are only interested in machines that are connected, and (b) the size of the MAC address is not 32 bits, but 48 bits (6 bytes).
>>>
>>>If it is for primary keys, you might also go ahead and use the GUID function - each call of the GUID function will give a different value. But this one takes up 16 bytes.
>>
>>Ok, How about the hard drive ID. Does anyone know how to get that?
>
>Greg, see - Serial Number - Motherboard/Hard Disk Thread #660123 - various suggestions and options.

Thanks Jos,

Most of these talk about the HDD Volumne number. I nave already decided to use this number in my routine. Thanks again.