Originally Posted by mateo107
How do I completely remove the Apache/PHP support and then reinstall?
First of all the errors you see refer to the Apache and PHP that come with ISPconfig, not to your main Apache and PHP. ISPConfig comes with its own Apache and PHP that serve the ISPConfig web interface on port 81 - it has nothing to do with your main Apache and PHP, and you must not remove them as they are requirements for ISPConfig!
Can you post the exact error messages you get?