Thought this might be helpful since some people seem to be having a few problems getting Lahman loaded into the game.
1. Download the Lahman DB (or other variation of same)
2. Create a folder inside your Sports Interactive Folder called
lahman53 If you installed the game to the default location it will be here - C:\Program Files\Sports Interactive
This will be your folder path once created - C:\Program Files\Sports Interactive\lahman53
3. Unzip the downloaded DB into the lahman53 folder you created
4. Start the game
5. Choose "Create New Game"
6. Then "Add Historical Major League"
7. Here you want to select "lahman53"
8. Then select the "Master.CSV" file
9. Click on "Confirm"
10. On the next screen choose the year you wish to start at and other options
11. Click "Import League"
12. You will then be brought to the Game Setup screen. Here you can name your league and set a bunch of other options. Once you're happy with all your settings, click "Start Game"
13. Add your GM as requested
14. You should now be ready to start playing
15. To have the game load real rookies from the DB each season, under Game Setup, ensure the "Automatically Import Historical Rookies" box is checked and ensure the path is correct (see image)
