I'm acquiring a MBP in a few days, and I was looking into purchasing an external HDD for back-up.... ing? Anyway, I don't really want to spend any money (who does?) and I thought to myself, "Self, you've got a 160GB drive in your PC that you can use!" I figure that I can partition off 80GB of it (could probably go lower) to use as a backup drive. I'm pretty tech savvy, but I never got into networking. I've got a Linksys wireless router that I'll be using to share my internet connection with the MBP, which also provides internet to my PC through a wired connection. Here's the question: What's the easiest way to get my MBP to backup to that 80GB partition on my PC?