The board probably uses a ZX chipset going by that serial # so all we have to go by is that it's a slot 1 board, ATX form factor, ZX chipset and on-board sound.
The bios string is the easiest way to identify an unknown board if the board is bootable. You can use this site to match your code:-http://www.ping.be/bios/
If the board is not bootable give us some more info to work with such as the number and type of slots on-board and any numbers screen printed on the board surface.
Another site that may be useful to you is:-http://www.motherboards.org/