After much searching I found this link: http://www.myfordfocus.com/how-to/mirrors.htm
I haven't tried it myself yet, but when/if I brave the directions, I'll report back here.
See link below
Program a new key and ignition to a 2000 ford focus
how to change 2000 ford focus quarter glass
do I have to lower the engine to replace the water pump ona 2000 ford focus zetec engine
you take te old one out
the 2000 ford focus has struts on the front. you can buy the strut/spring assembly for about 250 a pair online.
It's glued in with "sticky-pads." Pry it out, carefully and stick the new one in, OR... take it to your auto-glass company.
You will need to replace the whole mirror. Just buy a replacement at auto zone and installe.
See the answer for "How do you replace the drive belt in a 2000 Ford Focus?". The procedure is the same.
Sure you can. Just do a google search for passenget side mirror - Ford explorer. It will run about $50.
Remove oil pan
To replace the driver side mirror on a 2003 Ford Focus you will need a socket and a Philips head screwdriver. Loosen the driver side door panel so that you can reach inside to unplug the wiring harness, and then remove the bolt and screw to remove the mirror. Put the new mirror in place and reattach everything you just removed.