Login Scripts error

We got a new database server, so I updated the login script, so it can see a new share on the new server. Since I updated the login .bat file on the PDC repl/imports/scrips, users cannot get the latest virus signature updates from the server. I copied the .bat file from a tape backup back to the system to see if thats the problem, but it didn’t fix it. We are running Windows NT 4.0 and the desktops are running Win 95B. Users are login to the system using login scrips. Any ideas of how to fix this problem. Thanks.
Marios.