how can i get "MAC address" or "Hard Disk serial number" without WMI(System.Management reference)
I need this because WMI is not standart for all windows versions (Ex:95-98-NT does not contain WMI), though WMI can be installed on these versions, i dont want to be dependent on that.

Get (MAC address or Hard Disk serial number) without WMI
nielsvdcp
MAC:
C#
http://pinvoke.net/default.aspx/iphlpapi/GetAdaptersInfo.html
VB Example
http://www.dotnet247.com/247reference/msgs/18/91898.aspx
SendArp (MAY NOT BE AVAIL/WORKING FOR WIN95)
http://www.codeproject.com/csharp/Host_Info_within_Network.asp
the following are not C# but usable with some interop most likely.
HDD SN: http://www.winsim.com/diskid32/
Volume SN: http://codeproject.com/system/change_drive_sn.asp