Hi Scummy,
I am not sure about a list, I searched for a HCL for Centos in Google and got very little info, I assume that anything that works in Redhat Enterprise would work seeing as SME is Centos based and Centos is built from RHE source. Maybe we could get a list on contribs where users add to it, maybe 2 lists, one for compatability and one for incompatability? I had the same trouble with some older NIC's but my onboard LAN port worked OK (Realtek, I think, Gigabyte MB). So bottom line seems to be look at RHE compatabilty list and try it.
Regards,
Del