You're looking for the GTK runtime environment version 2.4.14.
Version was a minor but stable patch release, fixing bugs in the 2.4 series without adding disruptive features. This stability made it the “gold standard” for many proprietary and open-source Windows applications developed between 2005 and 2008. gtk runtime environment version 2.4.14 download
Are you looking to run a , or are you setting up a new development environment for GTK? GTK+2 for Windows Runtime Environment - SourceForge You're looking for the GTK runtime environment version 2