I need help with a VBA macro.

I want the macro to ask an "Iresponse" question with a input box and then
the answer of this question to be put into a certin cell "C5"
I then need to ask another question and have that answer put into a
different cell "C6"

I want another macro to ask a questions and if the answer is yes then it
automatically calulates a value in a cell. ex. (A10*1.07) and put that value
into a different cell A12

Any one who can pretty please help me??? this is for work and I have a due
date - YIKES??