First, you have to add your card definition to /etc/pcmcia/hostap_cs.conf
Edit this file and add :
card "PLANEX COMMUNICXATIONS INC."
manfid 0xd601, 0x0010
bind "hostap_cs"
It's time to flash your card (credits to gryning).
Download the latest firmware from :
http://www.red-bean.com/~proski/firmware/1.8.4.tar.bz2 (extract rf010804.hex)
http://www.red-bean.com/~proski/firmware/primary.tar.bz2 (extract pm010102.hex)
Then use this script :
#!/bin/sh
cardctl scheme default
prism2_srec -gs wlan0 /pm010102.hex
prism2_srec -gp wlan0 /pm010102.hex
iwpriv wlan0 reset 1
prism2_srec -rp wlan0 path/rf010804.hex
iwconfig wlan0 mode 2
cardctl scheme planex
Where <path> is the path to the firmware.
Use ifconfig -a and you will see your card interface, now put it up using ifconfig <interface> up and it will works.
If it's doesn't work properly, verify that you have hostap and hostap_cs module loaded (lsmod | grep hostap) and try to plug the card one more time.