I am starting to let Anna use my computer to go to a specific children friendly game-site (no not CWF - that has way too much porn (for her - not me

I want her to be able to have links to games, programs and websites all in one place. I just dont want to have her getting a user, that will then require me to choose user as I turn on the PC. It takes forever to startup, and I normally turn it on, then go do the dishes or something and then return to sit down and do stuff. I would hate to turn it on and then having to wait for it to give me the choice between my user or Annas...
I stumbled onto http://kidoz.net/ some years ago, and never really used it, but I would like to have something like it. Does anyone know of a solution or program??