Download FireFox :
http://www.mozilla.com/en-US/products/download.html?product=firefox-3.5.7&os=win&lang=en-US
When you run the for the first time, you can select all default options. When you run the shortcut on your desktop for the first time, make sure you have FireFox be your default browser. Since we no longer want to use Internet Explorer (blue icon).
Now that you have FireFox open, click on the “ADD to Firefox” button for NoSCript :
https://addons.mozilla.org/en-US/firefox/addon/722
and do the same for addblock plus :
https://addons.mozilla.org/en-US/firefox/addon/1865
Hopefully this helps your home computers. You’ll stop seeing a lot of ads, and random popups, unless internet explorer is badly infected. If so, you might want to run some ad removal cleaners in SAFE MODE. A good ad removal software would be Spybot, or malwarebytes.