No, you don't need to manually enter everything on Sked C -- just the part related to day trading.
With the CD version, you can flip to the actual Sked C page and Form 8829 line 8 worksheet C2 "Adjustments to calculated gains" worksheet page -- and input the data on that line. (The download version doesn't give you the option of flipping to the form & inputting the data manually onto the worksheet page). Everything else on Sked C is done automatically as you use the TurboTax software.
