Actually the pin and password are still on the device, even with the OS and applications deleted. Anyway...
Have you installed the Handheld OS for the 8100 onto your PC? You need to do that to reload the OS.
This thread has the location of the latest OS for the 8100 ->
http://www.blackberryforums.com/gene...languages.html FOLLOW THE INSTRUCTIONS TO THE LETTER
This thread will help you if Application Loader will not load the OS ->
What to do next if Jl Cmder will not connect and wipe - BlackBerryFAQ