Hi, drodz,
You have two possible options:
1) Complete your taxes to the end and once you hit File, it will tell you whether you qualify or not for Free File provided by the IRS. If not, it will prompt you to upgrade thus allowing you to transfer your tax information over into another version, i.e Deluxe.
2) Or, you will have to create another account on the TurboTax website. Make sure to sign off of your current account if you choose this second option.
TurboTax Basic version is only available for cd/download.
Hope this helps!