If you would like to personalise your username and password for Forecast 5, login to Forecast 5 with the default details:
Username: Admin
Password: (blank)
Then go to Update Current User

Change the username, enter the old password and enter a new password. Click Ok.
If you have purchased additonal users, you can follow the same steps as above, but using the default user1 username and password:
Username: user1
Password: (blank)