Q: How can I pass Page rank from my domain to directories of information that are hosted on other servers?

A: mod_proxy.  Mod_proxy allows you to host a directory on another while making it ‘look’ like a web server local directory.

Summary
This module implements a proxy/cache for Apache. It implements proxying capability for FTPCONNECT (for SSL), HTTP/0.9 sHTTP/1.0, and (as of Apache 1.3.23) HTTP/1.1. The module can be configured to connect to other proxy modules for these and other protocols. This module was experimental in Apache 1.1.x. As of Apache 1.2, mod_proxy stability is greatly improved. Warning:secured your server. Open proxy servers are dangerous both to your network and to the Internet at large.The complete text can be found online in the Apache Documentation.