How do you setup cacheing?

Hello, I have been trying to figure this out for a week now, with no luck. Posts to users@httpd.apache.org have gotten no response. Anyone here happen to know how to do this? I understand that Apache serves database driven web pages more quickly using a proxy / cache. Most of the tutorials I have found relating to proxy and caching seem to require that users change the configuration of their browser's proxy settings. This would be the standard proxy sitting between a user and all sites on the Internet, but this is not what I am looking for. I am trying to do the opposite of this. I would like to serve pages from one web site to multiple users through a proxy / cache. I also want to do this in a way that is transparent to the visitor. They access a web site's main URL, for example http://www.someplace.com, and enjoy the improved performance without having to know they are going through a proxy / cache. Please, would you confirm whether this is possible and, if so, what to do to enable it? Thanks, -Ed