What version of ActiveTcl should I use with Windows Vista?
The best version of Tcl to use with Windows Vista is ActiveTcl 8.4.14 or later. There are currently minor issues with installing and uninstalling, but these are not serious and are being worked on. The demo applications distributed with ActiveTcl all function as expected, including the graphical libraries and Expect. Note that you will need to right-click the installation file and select “Run as Administrator” for the installation to be successful. This will be fixed in a future release of ActiveTcl.