Just a couple things to add. Firefly is an excellent tool it will actually 'rip' the application and allow for branched simulations v.s. linear(Captivate, Lectora, Camtasia). I have heard all of the planets need to be aligned for Firefly to work as designed. In addition, a single license is somewhere around the 10,000 mark. If you are talking about basic system simulations (mouse clicks, drop downs, rollovers) then Captivate is your best bet. If you need to build an 'advanced' application (form validation, if/and/or functions, branching) then Lectora will better suit your needs. ...time to go home. Dave