Entendi ... encontrado aqui (agora quebrado) ou < href="https://web.archive.org/web/20090928023248/http://www.simplyaccounting.com/community/forums/p/5399/19091.aspx"> archive.org
Não descobri como identificar o nome de usuário, mas descobri o que é e o resto das informações de conexão.
connection type: TCP
username: sysadmin
password: ''// <-- default is blank
database: simply
host: myMachineName
port: ###### ''// You can get this using the following procedure
1. Open Simply Accounting
2. Go to Help->About Simply Accounting [blah blah blah]
3. Click on "Support Info"
4. look in the top-right corner of the Support Info window, you will see a
region labelled "Database Engine". The Port is listed at the bottom.
Raspe.
Note que S.A. DEVE ESTAR ABERTA para você se conectar a ela.