First of all, you need to set up a wireless account in "Network".
If you have done that, you should be able to connect.
The problem with cacko 1.23 is after you disconnect, you have to remove the card and insert it again to connect again.
This is a known issue with cacko 1.23 which is one of the reasons I switched back to the stock sharp rom.
If this isn't your problem, then maybe someone else can help you further.
Regards,
Doug