I ran across this site recently and found it to be a useful source of information and not only found practical advise on repairing electronic items, they also sell kits to give you the parts you need.
check it out for yourself
They even have a teardown of the latest Motorola RAZR Droid which has lots of pictures and shows the insides in all they’re glory. =)
http://www.ifixit.com/Teardown/Motorola-Droid-RAZR-Teardown/7048/1