Identifying network card

Hi, everybody...

I'm currently writing a newwork manager program, that I plan to
post for shareware soon.

However, I would like for my client to report information about
hardware and of course since its a network manager program,
information about which network interfacecard that's used in
the different clients.

Has anyone got sourcecode for identifying networkcards
(checking for networkcards)

e-mail preferred.

Regards,

S?ren Granfeldt
e-mail: sg...@inet.uni-c.dk