MS Wireless setup problem

I was setting up a neighbors network last night and ran into some issues. He bought all MS hardware - a wireless router with 4 ports, a wireless card for the laptop and a USB wireless NIC for another PC.

I hooked up the router to the main desktop (wired) and got things going without problems. Then I tried the laptop and get stuck in an infinite loop. It tells me to select which network it found (there's only 1 on the list), and I do - then it waits a couple seconds and then tells me it cannot configure the base station. No matter what I do next, I get back to where there's one network to connect to, it tries, and then I get the dialog about the base station.

Giving up, I went up stairs to connect the other PC and it went off without a hitch. That one even saw two networks (mine across the street), but I chose his and it found the base station fine. Works perfectly.

The only thing I could track down was the the MS Broadband software had already been installed on the laptop. So I removed it, then started from scratch - but still no luck.

Any suggestions? I've mostly only worked with Linksys stuff before, and those install screens make more sense. Note that WEP, etc. isn't configured yet. Help!

In the windows icon for the wireless find the check box that says let windows manage my wireless and uncheck it.
Use the MS software.
I think I had to do this for my sisters computer.