Question: how to import data from firebird to sql server?
Answer: In "Choose a Data Source" dialog, choose "FireBird/InterBase" ; Input the username (default: SYSDBA) and password (default is "masterkey"). ... 
In "Choose a Destination" dialog, choose "Microsoft SQL Server"; ... 
In "Select source Tables(s) & View(s)" dialog; ... 
In "Execution" Dialog; ... 
Finished!