Bill Sables, how ya' doing? There is software available, as Leslie N. indicated, it does need cleaning up. Probably would be easier to do as M Ted suggested, and have someone play it in. If you are looking for a particular piece of music, let me know. I have a ton of MIDI files, ready to share.
I've used Finale and Overture and dabbled with Noteworthy and a couble of ABC format programs that are best forgotten. I was heavy into Encore, but now I use Sibelius exclusively. It is a great program, though probably a bit on the pricy side for converting sheet music to MIDI files.
M. Ted, what is your platform? How committed are you to trying Overture?