Get your taxes done using TurboTax

So I am not able to file it electronically using the downloaded Turbo Tax on my computer already?  I've got in 99% of the information, I am just waiting for one form.  I need to make a payment.  When I try to file an extension, it makes me print it out and mail it in.  I bought Turbo Tax so I wouldn't have to mail anything in.  Can I do it electronically within the TurboTax software?