Windows 2000 Server

I have set up a home network with windows 2000.  We are not using actiove directory, instead using a work group.  Everything was connected and everyone could access the sahred files on the network.  However as time went on no one could access the files as it asked for a password.  So i gave all the users an admin accounts and password, (as it was the only one it would accept) these accounts where not the same as there user computers.  HOwever as time went on we could not access the network files at all.  We can log on in remote desktop and transfer the files from the server to our home computers but we can not see the network from our home computers at all.  The error we get is disk allocation.  I need some help in allowing my  network to see the server.  The server is working fine as we get the internet etc, just can not view files. but can view everyone one elses computer when typer there ip in explorer.  I need some help and not just re-install.