eamcarlson on "I can't find my old blog name so I can buy a redirect - help!"

I changed the name of my blog, and I kept my old blog name (which is the blog URL below). I wanted to purchase a redirect, but when I got into the redirect, it will only all me redirect my NEW blog name. I don't know how to make it so I can pay to redirect dumpthejunknow.wordpress.com to madisonfamiliesforbetternutrition.wordpress.com.
Help!