Get your taxes done using TurboTax

I'm interested in knowing what to do in the case where I e-file my TurboTax return, but need to include a form that TurboTax doesn't support (Form 709 - Gift) .  This isn't a question of needing to amend my return, simply how to include an unsupported TurboTax form with my return to be e-filed.  Is there a way to do that?  Does that mean I can't e-file my TurboTax return but have to mail my return to the IRS?  Can I mail the unsupported 709 form to the IRS separately, and have them attach it to my e-filed return? 

 

I accept the fact that Intuit can't support every possible tax form, but there should at least be a process defined for including a scanned copy of an unsupported form with my tax return to be e-filed.