Go to transfer domain menu in other registrar, type in you're odmain name, new registrar will contact name.com, they will send you e-mail to registrant e-mail adress (contact you use in name.com) where you confirm it.
It take 2-4 days. Enjoy ;).
I'd suggest Moniker for registrar, they are secure, reliable and have reasonable prices.
http://www.webmasterinter.net/moniker.com