Shadow R One said:
I told you the problem is most likey on your wife's side, cause your XP did show up on the network before.
Anyway, trust me, you don't need those NWLink IPX things, they are for Novell "NetWare"... "NW"Link...
Just remove those and reinstall Client for Microsoft Networks and File and Printer Sharing for Microsoft Networks, and make sure you have TCP/IP.
Then try to run that Network Setup Wizard again.
Or...
For the advanced way... goto:
Start -> Control Panel -> Network Connections
On the top menus, you will see Advanced, go and select Advanced Settings, make sure you see those Client for Microsoft Networks and File and Printer Sharing for Microsoft Networks bindings checked.
Btw, you said now that your wife cannot access your computer anymore, make sure you didn't have the build-in Firewall enabled, cause they might re-enabled for you when you run that wizard thing.