ACT version 6 was never designed to work on Windows Vista although I have been able to install if you right click on the setup file and select "Run As Administrator".
Failing this I would activate the actual vista administrator account and turn off UAC might also need to be done.
Paul Buchtmann pbuchtmann@ozemail.com.au Australia Australia's First ACT Consultant (1989)
FREE Record History to change default to Call or To-Do for ACT! 2010-2012 versions. Custom versions also available.
