>So, my real question is whether anybody knows that the field "ID" means in the resource file -- I'm assuming that I will want to be deleting records based on the values in this field.
Just browse and note the most frequent values in the ID field - specially those with "POS" in it, and where it begins with "WIND". Then look at the name field, that will give you some idea what's what.
You can actually keep any number of foxuser files. I keep mine one per project (copying from a root one for a new project), so I get separate MRU lists, and if one of them gets hosed, it's no big deal.