asus p5gd2 and wifi access point

I have some trouble with an P5GD2 asus mainboard:
I'm trying to install wireless function, driver + ap-software, but I'm
not lucky... the most important problem is that ap-software doesn't
accept config change: i.e. if I install with WPA, it doesn't accept WEP
configuration; only disintalling and reinstalling resolves...

There are two other important problem:
- windows/driver sometimes, during finally installation (after reboot)
doesn't work and system hang-up
- always, ap-software doesn't work on route when ecryption is actived:
it autenticate always, even if WPA-PSK doesn't match.

I'm trying to connect laptop with pc at home, but this
mainboard/software seem to have too much problem with this
configuration. At work, my laptopo works well with a dlink hardware
access point.

There is a solution to made work AP software?

thanks
Gianluca Altieri