Jose,
A "Batch Number Search", is certain, way to search the IGI at
FamilySearch.org, where you can narrow your search parameters, down to
the City and Parish Level. Provided, that you know the batch numbers,
for the area where you are searching. There are two places, to find
the Batch Numbers, one is the IGI itself (as you perform searches, you
can look at the bottom of the screen and see the source information,
such as film number, and the batch number, if one has been assigned.),
the second way, is by looking at the "Parish and Vital Records List",
that is only available on microfiche at your local FHC, if they still
have it.
The CD mentioned, is a resource disc, that I have compiled from
different sources, such as genealogy conferences, websites, and other
sources. Because, there is lots of information available, about
hispanic research, but there is no central location, for it all.
Also, on the disc, there is a scanned copy, of the "Parish and Vital
Records List", for