can't see my workgroup

I had bought 3 gateway computers 2 years ago and conencted them together on a network.  The only way i could see each computer in my workgroup is if i had ipx installed.  see i didn't know any better at the time(novice) i didn't think much of it as long as i could see each computer. well now i have to get the boxes working with just tcp/ip because i want to add some server anti virus software that needs to update clients on the network using tcp/ip. a year after our initial 3 computer purchase i added 3 more boxes which can see the workgroup using only TCPIP.  I have been comparing the good boxes with the bad and i can't seem to find anything different. I even had a buddy of mine who is very knowledgable about this not find the problem.  The boxes are all running xp pro.
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gothicbloodyConnect With a Mentor Commented:
I take it you already checked to make sure the Windows firewall was turned off?  If these are running Sp1 or below, you can check in Control Panel -> Network Connections.  See if Firewalled shows up under Status for your local area connection.  If so, go to the properties of the connection and turn off the firewall.

In SP2, go to Control Panel -> Windows Firewall and turn it off there.

I assume you already checked to make sure everyone is on the same workgroup?  

1- try ping the other pc's
2-Go in to the Start Menu > Connect to > View All Connections, and right click on the icon that says Local Area Connection 1, (or what ever you've named it)
From the right-click menu, select Properties and check the box labelled File & Printer Sharing.
When you've done this make sure you go to My Computer on EACH PC and right-click the Drives and Folders you want to share, close all screens, reboot both PC's. That should do it!
3-Try pinging on each computer, this is the adaptor address, if this does not work then the network card in that computer is stuffed.
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Or it Might Not Be The Firewall, Try Approach the situation like this.
Instead Of Doing It The Easy Way and Going To my Network Places and clicking on the folder, Try going to Workgroup computers, in the second tab (On the Left Hand Side theres two and its the Second) Click Microsoft Windows Network, Find The Network Name Of The Network, Double Click, Click On the Name Of The Computer Your Trying To Access( To Find The Name Right Click On my Computer, Properties, Computer Name and There You Go) Double Click it, And Go To Share Docs, or Pinter IF you Trying To USe The Printer, Double Click It, then See If That Works.

If That Doesn't Solve It..ITS THE FIREWALL!

Err, Cheers?
pele4483Author Commented:
firewall is off.  can ping all the computers. tried pinging and nothing back, whatever this address is!

remember the first three pcs do this the others don't.  I may try a new network card or new drivers, i may also try a celan install of XP.  It must be some weird setting.
pele4483Author Commented:
reset tcp/ip still nothing
It might be good to take a look at the browsing info on your network.  There are several tools to check this out.  Microsoft has a GUI tool called browmon.exe that can show you the different workgroups on your network and who the master browsers are.  Here's info on this program:

I've been searching the web for a copy of this tool but can't find one.  You might need to purchase a resource kit for XP to get it.

Another option is to go to the TechRepublic website and download a tool called "The Master Browser Tool".

You can run this to compare browser settings on the "good" and the "bad" PCs.  You might also try to change the master browser to a different PC to see if that helps.  You will need to register a freebie account on techrepublic to get the file.

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