Not sure exactly what your doing but if you enter the password wrong multiple time the blackberry will wipe back to a factory level.
Once your BB is there you will have to redo any apps or other things such as email. If you dont have a data plan you cannot get email or use the internet so you only have a simple cell phone and nothing more.
The SIM card does not control the password.
Did you find the BB?
Link for wipe http://btsc.webapps.blackberry.com/b...ListHelperImpl