I installed Genmac 2.0 and XWLan 3.0 on my Thinkpad T 42 (Atheros chip
set), and it works fine.

However, when I set my router for WPA-2 encryption, and set up a XWLAN
profile to match, the access point is found, but the connection never gets
established.

The router has two choices:

PSK vs EAP, and I chose PSK

TKIP vs EAS, and I chose TKIP

I don't know if there is something more I can do to make the encryption
work (it does work fine if not encrypted).

Thanks,
Sandy