I ask lot of questions sorry I work tech support and it kinda habbit
is it a FBSD live cd? I know your profile says FreeBSD but I wasn't sure if maybe you were trying something else like ubuntu, mepis, or suse
if it's FBSD I don't think I can really be of much help to you I've never worked with any BSD distro
but I am curious, can you use NDISWrapper to install the drivers for your NIC? or will that not work on BSD?