Dell truemobile 1300

I have a Dell Truemobile 1300 WLAN card in my work
laptop. I am using the MN-700 base station at home. When
I run the setup wizard, I get to a point where the wizard
asks for the network settings from my floppy disk and then
it tells me to configure the wireless card manually.
When I go into my Truemobile configuation utility, I can
get it to see my router but can't go any further.
My laptop is set up with corporate domain settings but I'm
not sure if that is the problem or not. Any help would be
much appreciated.
Thanks.