Pre-backing up data in remote location

I have a remote location with a very slow internet connection.  I would like to copy all the data to an HD, then bring it back with me to my main location to use as my initial Full backup.  Then, I plan on doing either incrementals or differentials weekly of the remote data to my main site.  What is the easiest way to accomplish this?  I was thinking I may have to trick the backup software by adding a server with the same name as the remote server, transfer the data into that server, backup that local server, then attempt to do an incremental backup of the remote server.  Seems like there should be an easier way but I am not familier with a good method.

Thanks