[Samba] archive flag in samba?

[Douglas D Germann Sr]

Hi--

My previous install of Samba was on a RedHat 9.0 box which just died.

I am used to running a backup of the server to a WinXP Pro box, using a batch
file with a bunch of xcopy commands to copy just the files which have changed
since the last backup.

When the old server died, I replaced it with a new Ubuntu 6.06 box. Now when I
run this batch file, it copies every one of the files, whether the file was
changed or not.

Is there a way to get this kind of functionality under the newer version
(3.0.22) of samba? 

(Yes, I do have other backups, this one is just a redundant one.)

Thanks!