Apache Reverse Proxy configuration help

I need some quick help configuring my apache setup to work as a reverse proxy... Brief: I want someone to be able to change their DNS to point to my server, and have my server reverse proxy their original site and apply some simple filtering in the process... So for instance: their site: [login to view URL], ip: 1.2.3.4 my server: [login to view URL] ip. 9.8.7.6 They point their domain to my server [login to view URL] -> 9.8.7.6 My server acts as a reverse proxy for their server [login to view URL] -> 9.8.7.6 -> (filtering) -> 1.2.3.4 The filtering will be performed by a php script that is already written... you just need to have apache use it. here are the details: 1) Apache 1.3 2) Cpanel setup 3) Must also work in a virtualhost mode ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows? (depending on the nature? of the deliverables): a)? For web sites or? other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software? installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform see description