I was wondering if there was some sort of free software where I can run a backup utility on my PC and load the files onto my Mac without having to manually copy all the files myself?
This should do the trick: http://www.aerofs.com/
Free software to automatically sync collections of files on different computers. It's peer-to-peer and works both when the computers on the same LAN (very fast) or even across the internet. They have a version for PC and Mac, so just download the appropriate one on each computer, define the directories you want to sync/backup and you're in business.