Migration Is A Two-Step Process
On the Dashboard of blogs that have been migrated to Beta (New Blogger), there's a Manage list out to the right of each blog title that says
Posts Settings Layout. If you have not been migrated at all or if your template has not been upgraded at all it will say:
Posts Settings Template. If migrated, your Navbar will also have Customize and New Post in it. Clicking Customize there or Layout in Dashboard will start the rest of the procedure (upgrading the template).
If you are in Beta, you will be able to add a Page Element, one of which is a links list. When you add it, be sure to have handy access to the URLs that you wish to enter and then just follow the directions. Enter the title and URLs for each blog, click on Add Link, and when all links are added be sure to save the changes before exiting.
If you are interested in having links open in new windows, titles, or alt comments on pics, you should choose an html/javascript page element rather than a Links List. If the Links List allowed any of that, I never figured it out!END.