@Ragman,
All you have to do is go to pre-draft rankings...and you can put players in any spot you would like...from the current yahoo default projections...and you can also move players down...Or remove them from your list so that your computer draft will not draft that/those players...
Once you like your list, just save it, and click import players...and it will auto place everyone else back in their current projections...
Example: If you want to put Ryan Braun as number 1 over Miguel Cabrera, or Mike Trout...and put Justin Verlander, or Strasburg higher to try to draft those pitchers with your second pick or even first pick...Once you save your ranking and then click import...It will auto place everyone else back on the list according to what yahoo has them set as defaults...