How do I integrate Tomcat 4.0 with Apache? The documentation is sparse.

You can integrate tomcat and apache, but you have to download module.

http://jakarta.apache.org/builds/jakarta-tomcat-4.0/release/v4.0.1/bin/

This url is the page that download the tomcat source. There are directories for module to integrate apache, for example linux, macosx, solaris8 and win32. You can choose and download module that you want.

And there is the file explaining to install module in tar file.