I have CS4 Production Premium and it runs great. A friend of mine had CS4PP installed in her computer. Her computer crashed and she tried to reinstall but the serial number is no longer valid. She has spent over nine hours on the phone with no help from Tech support or anyone else. She has been bounced all over the planet and they won't give her a new serial number. Is there an e-mail address for Adobe where she could get through to someone who could really help her?