The sample databases are available as scripts in the SQL Toolkit 6 help file. For SQL Compare, click 'here' under 'using the API (near the bottom), then 'Worked Example'. Under 'setting up the databases', you'll see another 'here' that you click to get to the script. Running the script in Management Studio will create the database. To get to the Data Compare sample database script, just start from the beginning and click the SQL Data Compare example instead of the SQL Compare API example.