Please read the previous chapters before you set out to install Firebird 2.0.x or 2.1.x.
The Firebird 2.1 series are built using the Microsoft
MSVC8 compiler. Microsoft introduced new rules for distributing the runtimes associated with this compiler on XP and Vista platforms. This introduced much more complexity and bloat into Firebird v.2.1.0 and 2.1.1 installations for these platform versions.
For the v.2.1.2 release, efforts have been made to improve the options, document them and to reduce the "weight" of installations, particularly for Windows Embedded deployments. Please refer to the later section entitled Microsoft Runtime Libraries.