chat room needed asap

I need a chat room to allow buyers to come to my site and chat directly with me about the products I'm selling. I need to chat directly with them and the messages must be kept seperate from any other chats I'm doing. I would also like the option to be able to search through my database to find that persons user details. My site requires them to enter a password or have a cookie installed, so it will be fairly easy I believe to integrate the two. I assume the best way to do this would be through java, but you're the coders, you tell me. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Installation package that will install the software (in ready-to-run condition) on the platform(s) specified in this bid request. 3) Complete ownership and distribution copyrights to all work purchased. ## Platform windows 2000 pro java