In this case he could buy older PC100/133 memory modules on e-bay ( i don't understand why manufacturers would produce non compatible memory modules since the main demand comes from older motherboards owners but i trust you ) .
You could see by yourself your chipset at boot sequence beginning ....
Also many software can identify a chipset .
Bioswizard for example is one of the most famous .
You can find it there ( download "bwz-rel.exe" ) :
or you could try the newest Bios agent ( Bioswizard successor ) .
I can only recommend Bioswizard since i have not tried yet Bios agent ( but you can try it of course ) .
Post your results here to clear us .
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