Copy all files created after a specific hour in command line (Windows)?
Robocopy will do the job, assuming you can specify a file from the previous hour's copy as a timestamp -- something like
robocopy <source> <destination> * /XO <file-from-an-hour-ago> <filespec-to-copy>
should do the trick, with a bit of tweaking. Hope this helps!
Edited to add: On a pre-Vista box you may need to download Robocopy, which as far as I know is best obtained in the Server 2003 Resource Kit Tools download; as far as I'm aware, Vista and newer should have Robocopy installed by default and present in your path.