Copy files using dos batch within a certain date/time range

I need to copy files in a folder, say c:\attach\1, to another folder, d:\attach\1, using dos batch.  The complication here is that I only need to copy files within a certain time range.  This copy will run about 10 times a day, and I only need to copy any new files since the the last copy was done.  As an example, if the last copy was run at 4:00 PM on Monday, and the next copy is performed at 8:00 AM Tuesday, I need to retrieve any new files put in c:\attach\1 in that time span.

This will actually occur between two servers over a vpn connection and interfacing with foxpro programs.  I have all of that set up.  The last piece I need is to get this file copy in place.

I am trying to do this in dos since the rest of the interface between these servers is in dos, but would I be better off using vbscript, or another scripting language?  As you can tell I'm not very familiar with scripting and learning as I go.  Thanks for any help.