One of the most useful software tools that you can have on your computer is
something that tells you how much information you upload to, and download
from, the internet over a specific time period. And, of course, how fast
those transfers are taking place. Here's a little program that can help you
achieve all this. It's easy to use, free, and available in a portable version
so there's nothing to install. Just download it, run it, then delete it if
you don't intend to use it again.
http://www.techsupportalert.com/content/keep-tabs-how-much-data-your-pc-downloads-and-uploads.htm