Powerbook does not see home network

Hi, my powerbook has simply stopped seeing ANY networks in my apartment. I have an iMac G5 and a Desktop G4 and they both see my airport express and my neighbors networks no problem. I took the laptop into a store the other day and it saw the store's network immediately and worked fine - i took laptop home and it worked for about 5 mins before shutting off again. Very odd. Can anyone help? All three machines are running 10.4.3
Many thanks,
Carl
PowerBook G4 titanium Mac OS X (10.4.3)

Can't test this out here at home, but I did some searching and found:
http://guides.macrumors.com/NetworkingWindows_with_Mac_OSX
as well as:
http://discussions.apple.com/thread.jspa?threadID=1359723&tstart=0
The main thing what seems to be the case here is that you need to identify on your Mac what the Windows workgroup name is you use.
You do this as follow:
System Preferences (under the Apple icon) -> select the network adapter you use to connect to your network, I will assume here because its a laptop that you use wireless, so make sure "Airport" is selected. At the bottom you will also see a small lock (left-bottom corner), make sure it is unlocked and if not click on it to unlock it. Now click on "Advanced" to go to the advanced configuration of your Airport and there click on the WINS tab. For WorkGroup, enter the Workgroup name of your home network. If you don't know what it is, then on your Windows computer right-click on "My computer", click on "Properties" and then go to the "Computer Name" tab. It will tell you there.
So enter that workgroup name on the Mac, click on OK and then on "Apply". Wait for a little while and then in the Finder sidebar (on the left), under Shared you should see your Windows PCs appear.
If you do not see the Shared in the sidebar, go to the Preferences of the Finder (Finder -> Preferences), go the the Sidebar pane and make sure "Connected Servers" and "Bonjour" are selected.
If it works then I would suggest you go and also do this for your Ethernet network adapter as the WINS setting would not be filled in there yet, this will ensure that when you connect your MPB using wired that you will still have the Windows stuff.
Hope this helps, sadly not something I can test here so I hope that my information is accurate.

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