You can go to the IRS website and get the form SS-4, and fill it out. Be sure to provide all the information correctly. My advice would be to get in touch with your tax pro and clear all the doubts. You must give all information needed about your company not leaving anything behind.

Read very carefully Reasons for Rejection of an Application. Fill the application on line, and right after that you'll get an EIN. The IRS is going to send you a written confirmation so wait for it.

Here you've got a little article written by the IRS specifying what you have to do in order to get an EIN number.