Server files and software on 8 computers?

i need help, please..i dont know much about networks.

i am working for a real estate company.they have 8 computers in their office..all hooked into a server pc.3 days ago a storm burnt out one of their modems, so they bought another one.

2 days ago, when they start up their server it read an upn error (?) you had to click ok twice and then connect.then it would connect.

then they noticed sometimes they would get a memoryerror from this real estate program called aci, also coming from the server where all the documents they work on using the aci program on the 8 computers..documents are heald on the ''z'' drive on the server.

now im not the network techi, im just upgrading the hardware and a other software things..

the network techi came in and created what he calls a script..he gave me these instructions after i put winxp on all the computers and upgrades etc.

run

\\mainserver

login.bat

then these instructions

right click my computer

properties

computer name

change domain name

Server files and software on 8 computers?house call

The instructions would be to set the domain on the client machines. Which should all be the same.

The script is to connect to the server, login, map the z: drive, and whatever else. Using a script isn't usually really required, but windows being what it is it's usually better to use one to make sure that everything acts properly since windows machines don't even like to play well with other windows machines in many cases.