Try the reset described here:
http://kb.mozillazine.org/Problems_printing_web_pages#Reset_printer

Tried that. It did not work. I have a suspicion that it is because I set my margin wrong and now I can't get into the print set up to change them back. When you choose print set up all I get is a black box. You cannot change the size of this box and it never fills in the text.

I did not have a print.print_print line. I did reset the lines that had to do with the printer but it did not work. I could not reset the line that said print.print_"margins"

Any thoughts. I tried deleting and reinstalling Firefox hoping that would fix it no such luck.

Sorry, just to be clear:

(1) Which did you use to make the change and which do not display correctly:

orange Firefox button > Print > Page Setup
or
classic File menu > Page Setup, or

the Properties button in the Print dialog?

(2) If you switch to a different printer, such as a PDF printer driver (many free ones you can install, such as PrimoPDF and CutePDF Writer), can you regain access to Firefox's Page Setup dialog?

I used the orange Firefox button. That sounds like a perfect solution....

I fixed before I read this..... I kept reading the reset printer stuff. I bothered me I did not have what it said I should. I did however have a line fore each printer I have installed and then additional lines for that printer for specific stuff (Like margins and fonts and stuff) I went in and reset every single line for all the printers I have installed. It fixed it.

I think the PDF printer would have been a great solution also because I could print from PDF.

Thank you so much for taking the time to help me!!!!