Mod_fastcgi and external PHP

Has anyone managed to get a standard version of mod_fastcgi work correctly with FastCGIExternalServer? There seems to be a complete lack of documentation on how to get this to work. I have managed to get it working by removing some code which appears to completely break AddHandler. However, people on the FastCGI list told me I was wrong for making it work. So, if anyone has managed to get it to work, please show me some working config.