set ralink WMP54G AP to 802.11b compatible under FreeBSD

Hi, guys:

I am using a linksys WMP54G PCI card under FreeBSD 6.0 and managed to
set it to HostAP mode. Thanks for this great work!

However, it seems that this AP can only accpet 802.11g clients not
802.11b clients. I have been tweaking some options, but no success.
Specifically, I have set mode to 11b and set media to DS/11Mbps. But
the 802.11b clients cannot even see the beacons from this linksys
card.

Please let me know if this is possible, I'll surely appreciate it. The
following is the ifconfig output after tweaking.

ral0: flags=8847<UP,BROADCAST,DEBUG,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::212:17ff:fe64:5b5d%ral0 prefixlen 64 scopeid 0x2
inet 192.168.1.1 netmask 0xffffff00 broadcast 192.168.1.255
ether 00:12:17:64:5b:5d
media: IEEE 802.11 Wireless Ethernet DS/11Mbps <hostap> (DS/11Mbps <hostap>)
status: associated
ssid kcai channel 4 bssid 00:12:17:64:5b:5d
authmode OPEN privacy OFF txpowmax 100 protmode CTS dtimperiod 1
bintval 100

Thanks in advance.

cheers,
--ken