A few things to help you out:
A copy of your install in a local folder.
A good text editor with a "search in files" function, like Ultraedit.
Search for the phrase "dating" (or any other keywords that you need to toy with)
That will cover the weird places like the default faq, about us, etc. pages.
Next, (I know you wont be able to find a couple of them and theres a reason why)
Get the plugin Firebug for Firefox and some of the neat add ons for that plugin.
Use that for determining/tracking down calls that arent in a standard format.
(Note, youll have to turn OFF the cache features under your admin panel > settings > advanced settings > template section.)
What you'll encounter is some of that is encrypted. Thats part of the bonnex footers and you arent supposed to toy with them. Before someone climbs all over you about it, I'd contact a bonnex agent DIRECTLY and point out your case; its quite possible (and professional) that they'd take the 30 seconds to create a slighty modified footer for you. It'd seem logical that they'd want to make a sale and could easily secure one after a trial run for such a meager amount of work. (Is like 30 seconds to decrypt it, and another 30 to redo it) <--- 10 seconds of that is grabbing a swig of coffee 
I just thought of it too, they do have an option for a short term license. 90 days or so and its cheap. I'd toy with your site and get it near ready to go then purchase it to give your client enough time to save up for it. Theres also ways to recoup that $ if they are non profit- donations, state funding, etc.
Hope that helps!