How to get a business account with the full business name on Twitter?

[Kaja]

Hi I'm a one man business and want to market myself. I have a personal account on twitter. I went to sign up for my business name Fantasia Technical Support. I put in my full name to sign up and then went to put Fantasia Technical Support as the user-name. It cuts me off at Fantasia; Twitter wont let me enter the full user-name even though it says I have up to 15 characters. Can someone tell me exactly how to do this please?And become a fan on Facebook? Oh, and any other free or low cost methods of marketing?
Thanx a million
Kaja

[mikesimarta]

My suggestion is that you should put your username as @FantasiaTechSupport (which is less than the maximum of 20 characters). Although a shorter name is better so your customers can have more characters to report problems