The "kgbaseball's Roster 3.0 (DL Version)" is waiting for approval, so it should be up shortly.
It's a .sav file, so you can just stick in into your My Documents/MVP Baseball 2005 folder, load up a new dynasty, use the Team Changer to pick the team you want to play with, and away you go.
Thanks to tywiggins and SwinginSoriano for their help.
If there's any players I missed, PLEASE let me know. Also, if there's problems, for God's sake, let me know!
Enjoy.