You will have to purchase any TurboTax products above the Absolute Zero version.
You can do that through the basic TurboTax program when you add information on forms not supported by Absolute Zero.
As you are preparing your return, TurboTax will prompt you when you need to upgrade based on your information.
Or you can start with the Self Employed progam online.
Many retailers carry TurboTax CD's - the Desktop versions.