rt2x00 wireless anyone?

Recently got a Belkin Wireless G PCMCIA card - Mepis 6 beta5 sees it:

$ dmesg:
[4294688.322000] rt2500 1.1.0 BETA3 2005/07/31 http://rt2x00.serialmonkey.com
[ 4294688.322000] PCI: Setting latency timer of device 0000:03:00.0 to 64
[4294688.343000] wlan0 (WE) : Driver using old /proc/net/wireless support, please fix driver !

$ iwconfig
lo no wireless extensions.

eth0 no wireless extensions.

wlan0 RT2500 Wireless ESSID:"Wnet767" Nickname:"default"
Mode:Managed Frequency=2.412 GHz Bit Rate=11 Mb/s (- should be 54 Mb/s)
RTS thr:off Fragment thr:off
Link Quality=0/100 Signal level=-120 dBm Noise level:-196 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

# ifup wlan0
ifup: interface wlan0 already configured

The config utility 'RaConfig2500' reports "Device driver not found"

Anyone had any success with similar devices based on the (in my case) rt2500 chipset?

Devices based on these chipsets are known to work under recent Linux distros - Ubuntu 5.10 for one...