hi every one! new to photography and this forum. I just got a 40d and love it so far but i got me a problem. id like to set the quick controls wheel thing to adjust shutter speed instead of aperture.the little rubber wheel up front is starting to wear out and id adjust shutter alot more that aperture.
i have tried to search on here as well as uncle google to no avail. can someone help me out pleae it would be much appericated! 



