PHP Sessions in Netscape

Hi, I have 2 web based applications (A & B) written in PHP and I need to pass information from one application to another. So, I start a session in one application and retrieve the value of that session in the other application. It works fine in Internet Explorer and not in Netscape. The session IDs in application A & B are the same in Internet Explorer, but different in Netscape. The 2 applications has the same domain, but with different port. i.e. Application A http://domain.com:8000 Application B http://domain.com:8001 My session is stored in cookies in the PHP setting. Therefore, I suspect that the session in Netscape fails because of the domain problem. Have anyone encountered this kind of problem and know a way to work around it ? Thank you for your help!!!