This is MUCH easier than you think.
If you get whitelisted (which means approved in human speak) to use Google Friend Connect, you can rush off to sign up and install it. However, you'll reach a cryptic step that says you have to upload two files to your server.
Uh-oh, you have no server, you are using Google's very own Blogger (blogspot.com) tool. Did they not think this through? Why ask someone you know ahead of time to install files on a server they know you don't have?
Ah, but they half did, yet did not tell you this clearly. The two files they asked you to upload, are actually uploaded for you as a Blogger member. So skip that that upload step, and move on.
Make sure you check the width of the widget when you create the code within Google Friend Connect. I had to play with a number of widths to get it to fully fit.