The short answer is……
You’ll need a custom loop run inside of your footer. Use the WP_Query function to do this. More info can be found here….
http://codex.wordpress.org/Class_Reference/WP_Query
Set up your custom loop to pull only the 5 most recent posts. The link above will show you how to set up those arguments inside of the new WP_Query() function.
Inside of that loop you’ll want to have the post information formatted into a new div and floated to the left (so they all line up properly). You can have it display in a div with a certain ID that you define the styles for in your css stylesheet.
It’s asking a lot to explain it without actually doing it all for you, so hopefully that puts you on the right track 🙂
Think this one might require someone to sit down with me! Thank you for your help, though.