Verity Collection Issues

I inherited some CF code that depends on 6 Verity indexes. When I try to search against those indexes, I get nothing. At the moment, I have several questions about what might be happening:

1) When CFQUERY is used to search on an index, doesn't the full name of the index need to be used? For example, all these indexes begin with the same two words, say, "This_That_". After "This_That_", you might have "a" or "b". When the code begins its search, the variable containing the name of the index only says "This_That", not "This_That_a" or "This_That_b". Does this search a "root" of the indexes and search all of them, or is this screwed up?

2) The CF Administrator tells me that the indexes are not "mapped". How do I "map" an index?

3) I tried re-creating an index in the hope that in doing so, I would also "map" it. I was told that the index was already "registered" with CF. What does that mean? Not only that, but now I'm getting additional errors after having tried to re-create an index.

Where can I find more information on all of this?