Engine Performance problem
1999 Ford Explorer 4 cyl Four Wheel Drive Automatic 115,00 miles

I need to replace the spark plugs in my 1999 Ford Explorer. How do i get to the passenger side back plug that is in a space so small that my hand barely even fits in it? I have a Chilton's manual and naturally it has no troubleshooting section, it just says remove and replace. It's kinda hard to remove when I can't even get a grip on the boot to get it off the plug. Any suggestions would be greatly appreciated, Thanks!