You’re traveling and you realize an important files is on your desktop.
Maybe you can get a co-worker to email it to you. Or you can suck it up and do without (SOL).
Or you could plan ahead and realize you are going to need files you may have left back at home.
There’s a program/free service that lets you get any file off your computer using any web browser, Windows Live Sync (https://sync.live.com/).
You download and install a small application on the base desktop. Configure it with a username and password (here’s where you really want to use a hard to guess, strong password).
Then when you need a file, you go to https://sync.live.com/ and log in. Your files are displays and you can download the one you need.
Your network administrator will freak, but a system like Windows Live Sync will save your rear end someday.