I have a program called "Remap Notes" which will allow you to easily
transpose any MIDI notes to any other note.  It goes through the file
in time order so it will not map a note and then remap it again.  You
can find this program, as well as a lot of others, on the download
page of my web site,  http://spencerserolls.com/Files4Download.html 

Spencer Chase