mysql_connect undefined function

Hi, I have the above problem when trying to use PHP 5.0.0 RC2 and MySQL 5.0.0a. I get out put saying mysql_connect() undefined function. I believe there is an installation issue with this. Please help. www.NJJelley.com ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ CONFIDENTIALITY NOTICE: This Email is confidential and may also be privileged. If you are not the intended recipient, you are obliged to destroy this e-mail and notify the sender IMMEDIATELY; you may not copy the email or use it for any purpose or disclose its contents to any other person. GENERAL STATEMENT: Any statements made, or intentions expressed in this communication may not necessarily reflect the view of N J Jelley. Be advised that no content herein may be held binding upon N J Jelley or any associated company unless confirmed by the issuance of a formal contractual document. We advise that in keeping with good computing practice the recipient of this e-mail should ensure that it is virus free. We do not accept responsibility for any virus that may be transferred by way of this e-mail. E-mail may be susceptible to data corruption, interception and unauthorised amendment, and we do not accept liability for any such corruption, interception or amendment or any consequences thereof.