If you want to create a gdb database by EMS SQL Manager Lite for InterBase & Firebird you need the not obsolete firebird embed version which currently is Firebird-126.96.36.199540-0_Win32_embed.zip. Download it from http://sourceforge.net/projects/firebird/?source=dlp. Then unpack it in C:\Users\gg\Documents\firebird folder (if "firebird" folder doesn't exist create it). Proceed with the creation wizard and for charset select "none". At the end of the wizard the database is created.
At this point if something goes wrong download, install and execute "Dll Files fixer". You can download it form here: http://www.dll-files.com/dllindex/dll-files.shtml?msvcr71. Done. Now you can create and connect to firebird database.