Any experience of 3Com 3cr990 server cards?

I'm trying to install the above NIC into my samba box. My kernel is 2.4.4-GB. The module, downloaded from 3com's website, is built for a 2.2 kernel. Although inexperienced, I have tried to build the source code, but am getting build errors I cannot decipher with my limited C experience. I suspect they are library compatability errors. Has anybody ever used this card, which I now suspect is aimed at MS markets, not unix platforms, or know where I can obtain a pre-compiled module? Many thanks Darren Garside