Probably the same people that use a Mac. Anyway to answer the OP's question hopefully.
If you look at the bottom of the IGHome page it tells you how to make the pages that you want your home page.
If you want to change your Firefox home page then go to whatever page you want as your home page then click "Tools" on the menu bar. (If you don't have the menu bar on Firefox then right click at the top of Firefox and left click menu bar.) Then go to the bottom of the tools menu and click "options" then "Home" then "Use Current Pages."