Go to "Customize Journal". On the Basics tab, make sure your style is set to S2. Save.
On the Basics tab, you should see a place that says "Links List" that has (ironically) a link in it. If you click on that link it gives you a bunch of boxes to fill in. On the far left the box will be numbered by tens, starting at 10. Then there will be two boxes groups with each number. The top box is for the link name; the bottom box will have "http://" in it already, that's where the url for your link goes.
The numbers are just so you can reorder your links if you want to. For example, once you get them all in you want the fourth link to be first. All you have to do is number it something less than 10, and save and it will be moved to the top of the list.