Instructions are at: https://developer.mozilla.org/en/docs/Creating_a_patch https://developer.mozilla.org/en/docs/Getting_your_patch_in_the_tree If you have a question about developing Mozilla, and can't find the solution on https://developer.mozilla.org, you can try asking your question...
I have lots of html files (index.html) but I can't open them in IE, which is my default internet browser. I have to right click it and select open with and choose either Firefox or Google chrome. I can open any web site in IE, it is just the html files!