Pocket PC serial number

How can I get the serial number (via code) of a PDA device?

I've found a link onhttp://samples.gotdotnet.com/quickstart/CompactFramework/
the returns the device ID (serial number), but this is of the form
8E0000E5-8B82-A17B-0038-0050BF1977E0.

The serial number of my PDA is 2CK504106L, but when I run code from the above link I got a serial number in the the above format and not my PDA's serial number.

Any ideas anyone?

Thanks

[645 byte] By [Coss] at [2007-12-16]