I'm having trouble downloading videos. I have Microsoft Security Essentials for virus protection. I have gone into Apple site and downloaded quicktime correctly and when I go back a box pops up saying "to help protect your security Internet Explorer has restricted this site from showing certain content - click here for options" I click on it and it says Installation Blocked and click further and click on Add-on Disabled and nothing happens. It won't let me view videos. I, too, would like to learn filet crochet but I guess my computer says No! Can anyone help me out there?