Hi There! You would enter this in Deductions and Credits in the Federal Taxes
section. If you don't see the option that says Car Registration Fees in
the list of "Your tax breaks" (this comes from the boxes you selected
when you first started), then you can click the blue link that says,
"Check for tax breaks" and then, "Jump to Full List". You will see an
option that says Cars and Other Things You Own. The Car Registration
Fees will be there.