On the Network issue:
Check that all your PCs belong ot the same Workgroup name.
Do you see all PCs on the Newtwork?
Make sure files sharing is enabled.
Make sure the XP built-in firewall is disabled.
On the alogon screen:
In User Accounts click on Change the way users log on or off.
Then check both options:
* Use the Welcome screen
* Use Fast User Switching
I am running xp, Before I was able to log on our network (4 computers). Now I can not, I can get to the internet and my email but I can not access the other computers and they can not access my computer.
Also before when I would turn on my computer, I would get the welcome screen and it would show my name and I would log on. Now when I turn on the computer it "by passes" the welcome screen and my desk top appears. Could this be the problem? I tried to change logging on in the users windows in control panel..but nothing has changed

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