only have 2 wires coming from the ceiling box. With the wall switch off there's no power on either the black or white.
As kok328 stated this can not
be the case unless
what you state as two wires coming out of the ceiling box you mean two wires that are free to be connected but there are more wires in the ceiling box.
clcmbtn until you come back and answer some of our questions we won't be able to guide you the proper way because as stated it depends on how everything is wired in both the ceiling and switch box.
Again the big determining factor is where is the power coming from and how many wires come from the switch to the ceiling box?
Until we hear back from clcmbtn we are just guessing. Our guessing methods are correct but won't necessarily match what the OP has (OP = Original Poster - in this case clcmbtn).
clcmbtn - there is no need to pull other fans down to figure out how to wire this fan. Please answer the questions we have asked and we can save you that trouble. The one you happen to pull down may not be wired the same way so don't waste your time pulling another fan down. Just answer our questions first.
Sparky617 - while the remote option is a consideration for convenience maybe a remote is not needed in this case as of yet for $80. If the original fan unit allowed the OP to operate the fan independantly of the light with one switch the wiring is there now. We just have to know exactly what wires are where in order to give the OP the proper guidance.