Chevy Impala 2000 with passlock 2

I HATE this anti-theft system.. it protects cars from their owners. A real theif could

steal it..
I need help. Is anyone out there that can help? My poor daughetr got this car for

her birthday from my ex husband her dad.. I gave a friend the directions to put a

cd changer in it. Well he detered from the directions and cause the ignition to

lock up.. Now I need to know how to unlock it or how I can maybe bypass the

passlock 2 sysytem so that the ignition will unlock... I would like to completly

disarm passlock 2 for good...Please can anyone help.. you would be our hero... We

dont have the hundreds of Dollars GM would want to take us for on this... Thanks

in advanced , Lisa..... my email is oedor@inter-linc.net or Missourihoney@msn.com