For a little more information, it's a really basic network. There are 2 servers, one is a Windows 2000 Server, vanilla. The other is a standard windows xp computer. There are numerous switches in the server room as well as some scattered about the building. There's no virtual machines or special user rights or anything of that sort. Essentially a computer with shared files on it. We don't need anything more.
There really isn't a set budget yet. I need to gather some info to write up a proposal.
Storage right now is only 100GB, so that's not really an issue.
I don't know what AD is. And I don't know how to setup VMs or if they're necessary.
Would 100GB work on old wiring? We have traditionat CAT5E wiring that's fairly old. Some of the lines are newer. I suspect the file transfer speeds are from the server being old and also having a slow hard drive.