it does nothing to change the operating system, all it is is an additional browser does not change Internet explorer or remove it nor affect anything about it. And it is highly advised to always have at a minimum of 2 browsers on any computer because they do fail and if you only have one and it fails you have no access to get online so having firefox as an added browser is actually beneficial in that aspect also. but as I said in my post the fireshot add on is now available for Internet explorer too can be added on to it.

I believe as long as the packaging is sealed your cartridges are good to use. I would be more concerned with the tiny nozzles on the printer itself gumming up through possible lack of use. Do you get any messages on the screen on the printer? A model number might be helpful in solving the issue too. Have you found the maintenance screen and done a nozzle cleaning and then tried printing a test page?

Barbara- We ran the paint in a line across the top of the image, not on the organza but on the cardboard border that was masked off. Then we took the cardboard squeegee and pulled the paint towards us, making sure the paint has gone the whole way across so you have no bare spots. Usually the first print is incomplete, but by the second or third one your screen is filled and the impressions look good. You have to add ink across the top as needed. A real window squeegee works better than cardboard, but I needed to have one for each child to use. Karen

After doing some experimenting I found it to be treated just like a paint followed by 2 coats of polyurethane...it truly came out better than expected.