I see in the link where it says:
2 X 184-pin DIMM sockets support max. memory capacity 2GB
Supports Dual channel DDR 400/333 Un-buffered ECC memory
I've not used anyone else for memory, so I wouldn't like to offer any personal recommendations, but Crucial do guarantee compatibility or they will refund you. I did once have trouble finding memory for an unknown brand motherboard, and they were very helpful when I emailed them, so maybe you could drop them a line?