New iTunes won't reset my old 3 Gs ..my daughter forgot her password ..!!!! HELP ASAP !!!!

If you mean RESTORE, you don't need the passcode if your're using the computer the phone was last synced with. If it was never synced or don't have access to that computer, you have to force the phone into recovery mode. See this:

iOS: Forgotten passcode or device disabled after entering wrong passcode