How do I transfer data to another computer?

On old ManicTime installation click "Backup now" button to backup the database.

On new computer:

Install ManicTime on new computer and run it so a new database is created.
Close ManicTime
Locate folder:
XP: C:\Documents and Settings\<username>\Local Settings\Application Data\Finkit\ManicTime\
Vista or Windows 7: C:\Users\<username>\AppData\Local\ Finkit\ManicTime\
Copy(overwrite) old database to this folder
Run ManicTime