I have someone making a custom plugin for me. It involves comments. He says there is no hook for the plugin, so I need to hack the core code and insert some PHP in order to get the plugin working.
As this person is new to WordPress and might not know, I was wondering if there is a way to do this without hacking the core code.
While searching for a solution, I found the following online. It seems this person was able to do it for his situation, but I don't know if it would work in all situations.