FF is just another browser, it has no effect on MS updates.
With the exception, if you use FF to go to the MS update site, you cannot get the manual updates without jumping through hoops. It can be done, but since you still have IE installed you use it.
I have Windows XP and Internet Explorer 8 installed on my computer. I also receive automatic Windows XP updates from Microsoft. If I install Firefox on my computer and not use Internet Explorer any more, will I still receive automatic Windows updates? Thank you very much. user470