Please note that the string "<base>" in the steps below represents the base directory where the ZIP archive gets extracted.
Extract the downloaded ZIP archive to the base directory where Tcl/Tk should be installed, while preserving path information.
Optionally, add the directory "<base>\Tcl\bin" to the PATH environment variable.
Optionally, create a copy of the file "<base>\Tcl\bin\tclsh86t.exe" named "<base>\Tcl\bin\tclsh.exe" (i.e. in the same directory) to ease integration with other software packages.