Jos,
Finally made some progress, thanks to your tips and the forum links.
Application:TApacheApplication; //<======= I did not use this line but it sure did put me on the right track,
what I did was to include the "custapache" unit in the uses statement at the beginning, this allowed me to compile the demo project without any amendments.
Just a quick note of thanks to this forum, in my job I get given a problem and the solution I'm expected to come up with is always required to be robust, fast and needed by yesterday! Without FPC/Lazarus and this forum I'm sure my job would be a lot more difficult. I've posted 2 questions in the last week or so regarding Apache Modules and had answers/tips/advise within a matter of hours, long live FPC/Lazarus!!!. I'll get of my soap box now.