UBB.Developers Forums UBB.classic V6 Mod Questions Adding fields to profile, but only to the profile?

I have a question about the Add Extra Profile Fields hack mentioned above:

Where does $maxmemfields = 17; go in ubb_library.pl? It doesn't say, and that variable doesn't already exist in my ubb_library.pl. Thanks.

Also, looking at the instructions for this hack, I'm a little confused because it isn't written in the usual way, with "Find" certain text and then "Replace" or "Add" to it. It just lists code and doesn't say if it's supposed to replace other code or be added in addition to it. Maybe it will be self-explanatory when I start at it, but I thought that one of you gurus would be able to steer me in the right direction before I do something stupid.

Thanks as always to all the amazingly helpful people here.