if you use windows authentication you probably done need to specify a login as it will use the currently logged in user to authenticate. But if you did want to use a specific user then put the user after UID= and the password after PWD= i.e.
DRIVER={SQL SERVER};SERVER=servername;UID=jblogs;PWD=test1234;DATABASE=dbname
no you dont need to include dbf just the name of the database
