E-smith uses Samba. I've been advised elsewhere that this will work with Samba; in fact, this is a project I will be working on over the next "few" days myself.
I was also advised to download dos network clients at this location:
ftp://ftp.microsoft.com/bussys/clients/msclient/which I have done, but have not had the opportunity to test yet.
I have several proprietary dos applications that refuse to run in a dos window and that need a server so that four DOS 6.22 workstations can keep the shared data files in sync and share a single printer.
If this sounds similar to your problem, you might try the ftp site.
To keep costs down further, since my intent in this application is to operate the machine solely as a file and print server in our service department, I'll use an older 486 machine as the "departmental e-smith." If this is also similar to your situation, you may want to search the forum for tips on installing e-smith on a machine with an ISA motherboard.