You may find the specification file, that you can use to build the rpm binaries on your Redhat (Suse may also work) system at: http://jfontain.free.fr/tcltk-8.4.4-1.spec To build, download the Tcl/Tk 8.4.4 and Thread 2.5.2 sources from http://prdownloads.sourceforge.net/tcl/ into your /usr/src/redhat/SOURCES/ directory, place the specification file in your /usr/src/redhat/SPECS/ directory, then from that directory, type: # rpmbuild -bb --clean tcltk-8.4.4-1.spec Note: you may change the installation directory and turn on the thread extension at the beginning of the specification file. Jean-Luc Fontaine (http://jfontain.free.fr/)