At the risk of sounding like a Fuel Nazi, I would suggest that you convert any grease you mave have into biodiesel. The article spoke mainly about "brewing" biodiesel from the grease taken from the various restaurants & converting it into a viable diesel fuel.
There are several folks on this forum who run straight veggie oil, like you are planning to do, but do a search on this forum for all of the things that can happen to your engine unless you do your homework & install the correct system. These guys can help you out in this respect if you ask.
I, personally, am not a fan of burning veggie oil in my car unless it has been converted to biodiesel fuel. I do use biodiesel when it is available out here. However, I am not going to flame anyone that installs a good, correct veggie system on their car - it's their car & if they want to use it, it's up to them.
BTW, the Lovecraft systems are known crap. Do yourself a favor & convert to another veggie system. Others may chime in with more advice. Good luck...
On edit: here's a good discussion going on right now:
http://www.peachparts.com/shopforum/showthread.php?t=290309