I have read previous threads on QDB2 plugin building, but cannot figure out what software I must get from IBM in order to obtain the sqllib/include directory and the db2cli.lib file.

I am running in a windows 32-bit environment.

Relevant quote from the documentation...

How to Build the QDB2 Plugin on Windows

The DB2 header and include files should already be installed in the right directories. You just have to build the plugin as follows:

cd %QTDIR%\src\plugins\sqldrivers\db2
qmake "INCLUDEPATH+=<DB2 home>/sqllib/include" "LIBS+=<DB2 home>/sqllib/lib/db2cli.lib"
nmake