great software :-))
I have a sitecom "wl-120" pcmcia card, I think it's its a TI acx111 chipset (pciID: 104c:9066).
The official Windows XP Sitecom drivers work fine on this card (do not use the win98 or ME drivers).
This driver is more or less the "standard" broadcom driver for all of these chipsets.
The only drawback so far is, it stops working if there is no traffic for more then about 2 minutes.
To avoid this just keep a "ping" running in the background.
If the card stops working:
use "cardctl eject 0; sleep 10; cardctl insert 0; iwconfig ......."
BUT: you have to set the encryption AFTER the essid, else the card does not take the essid and does not connect.
I use an IBM-Thinkpad T32 and the Sitecom WL-120 Wlan Card.
Let me know if I can be of any help.