I don't know of anything for the rules, but the
NSRCG character generator comes with a lookup program (GM View Dat) that can be used to find what page an item is on.
I'm thinking of
creating an online index for the primary 3rd edition books, but it's slow work. It took me a few hours yesterday to READ 30 pages in one book, noting every item I'd want to put into such an Index. I came up with about 300 items for such an index. If I were to do this, I'd need volunteers to help with the reading.
I know it's hard for your players. Recently I looked up how to use a Dart Gun. This
post lists those places, and that's just rules for one item. Good luck to you and your players!