If it has anything to do with the IRS to get money from you, it's SUPER EASY...
Just click (or copy/paste) these links and you'll be able to sign up for an EIN fast and easy.
This Video should get you started. http://www.irsvideos.gov/SmallBusinessTaxpayer/StartingaBusiness/EIN
More info.... (All the info you can stomach.)
I have an LLC (Limited Liability Company) and works best for me because there's no double taxation and seems to be easier filing. (Just another form on my standard 1040)