IBM, AT&T Global Dialer and Wireless (Linksys) Connection Question.

I have a question. I set up a wireless router (Linksys) on a DSL
connection at someone's else (she's works for IBM in management in
Fishkill and Pokip). She has a TP T21 with Lotus Notes, AT&T dialer,
etc.

The wireless router works fine. I brought my own laptop to her house
and it automatically picked up the signal and I was able to make a
connection with no problem.

But with her computer there is a problem. I configured her computer
with the same seetings as mine ( to use DHCP and DNS automatically)
and even swapped my wireless card for hers and still nothing. I cannot
get a wireless connection on her TP.

However, when she plugs in an Ethernet cable from one of the ports on
the router to the laptop, she can get connectivity.

She uses the AT&T Global Dialer to connect to IBM. But she is able to
dial the number without a phone line, just the Ethernet cable and she
can access the w3.ibm.com internal Web pages.

She got the wireless router and card so she can work around the house
and not have a cable.

Like I said my laptop and her laptop had the exact some wireless
configuration settings to make a connection and mine worked and hers
did not.

Even with my "good" Ethernet card in her computer, it did not work. I
was wondering whether the AT&T global dialer or something else has to
be specially configured for the wireless LAN to work.

Any thoughts about this? Thanks for any help that you can provide.

David