http://www.daniweb.com/techtalkforum...et+script.html
Here TKS has posted the setup procedure and a snippet for a batch file to do the mapping.
Once you get the share setup and the drive mapping via batch file you can add an xcopy line like this "xcopy c:\DATA\*.* z: /E /C /D" This copies all updated versions of files in my c:\DATA drive to the root of the network drive "z" while skipping files that are already identical.
You can read up on xcopy and xcopy32 and what command switches will do what, very powerful utility. If you come up with something snappy, please post it back here so people searching later can find it.