Audio Systems: 2000 Buick Regal stereo, override code, buick regal

Question
I replaced the battery in my 2000 Regal and the anti theft system has locked me out completely likely because i tried to reset it w/o the code (it wasn't given to me when i bought the car). Upon the advice of a service man I let the car sit for an hour w/ the battery engaged but no the ignition, which didn't reset the stereo. How do I reset it so the code can be pulled? Or is there a way I can reset/pull the code?

Answer
unplug the battery overnight in the morning plug it back,
Try this,
Press & hold the 2 & 3 buttons @ the same time for about 10 seconds; a 2 or 3 digit code will appear, write this # down,press & hold the am/fm button for about 10 seconds: another code will appear, write this # down, then call 1-407-9331065 they will give you the code for a $20.00 fee   Enter this # into your radio following the instructions in your owners manual. If you get an override code that starts with 0, you drop the 0 when entering the code into your radio.
If you don't have an owners manual, try this, press & hold the hour button until the first 2 digits of your code come up, then press & hold the minute button until the last 2 digits show. Then press the am/fm button. This should reset your stereo