Backups User (backing up home computer)

I am trying to figure out a way to back up the information on my home computer (windows xp) to my backups user account on Dreamhost. I would like to be able to set this up so only added or changed information gets uploaded to Dreamhost after the initial backup. It looks like it can be done using rsync…but I am not entirely sure what that is and can’t seem to get it working. Can anyone on here suggest an easier way, or a decent tutorial for the layperson? Thanks!