Get your taxes done using TurboTax

I understand that I would be paying tax I'm not required to pay, but I need to report this gift income for other purposed outside of the IRS.  

So, since it is too late to amend my return via TurboTax, then I'll be submitting paper copies of the 1040X and 1040V and my payment via snailmail?  Or is there another way?  

Thanks.