Dropbox
Dropbox is a pretty cool program that allows you to sync a folder across several of your computers over the web, and access its contents via a web browser. It’s so cool I’m actually begging people to sign up using this link, which will give both of us an extra 250MB of storage, up to a maximum of 3GB. So please, sign up and install the program, if only so I get the extra space (I really use it a lot.) You can uninstall it later if you want, but I promise you will like it.