Once you get it installed - and you can type "wish" with good result - then look in the top level of your tkcvs distribution for doinstall.tcl. That's the installer script.
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I don't see any startup script in my installation directory, where should it be? Also I don't have wish8.x in my path, where can I get it?
tcl/tk can be downloaded from http://tcl.sourceforge.net/.
Once you get it installed - and you can type "wish" with good result - then look in the top level of your tkcvs distribution for doinstall.tcl. That's the installer script.