Even if they don't, you could still have the DUmmieFUnnies.com domain read files and folders from your blogspot site. Not a very good solution, I know, but doable.
You mean via FTP? I would prefer that BlogSpot offer this service so that anybody going to the old (which means the current BlogSpot URL that I am now using) would be automatically forwarded to the new URL sans "BlogSpot" in the address. This seems like a natural thing for them to do. Angelfire offers unique personalized URLs for a fee. This would be a great way for BlogSpot to earn extra $$$.