Hi,
I'm running FreeBSD 6.2 on MSI M670, it has a wireless card which I didn't
find support for.
My lspci -v show this:
04:09.0 Network controller: RaLink RT2561/RT61 rev B 802.11g
Subsystem: Micro-Star International Co., Ltd. Unknown device b833
Flags: bus master, slow devsel, latency 64, IRQ
Might have to kldload if_ral. If that works (device shows up after
an ifconfig), you'll have to modify /boot/loader.conf to always load
if_ral on startup. I have one of these exact cards, but since it's
not HP certified, my bios freezes the system if you put it in, hence,
haven't tested it.