Problem with Word 2000 Index Feature

I have a rather large (3.5 mb) genealogy document with about 27,000 names marked for indexing. When I create an index, the index contains a lot of numbers without names. The names are OK, but there are extra numbers. For example, at the first of the index appears ", 75 ", one to a line, about 100 of these. Further into the index, extra numbers are inserted, alone, on lines.
The document is about 1000 pages long, and is just text, no pictures. I copied the first 200 pages and created a new document with just these, and then created an index. The index was fine. I did this with the next 200 pages, with the same result. In fact, I created an index for each subset of 200 pages successfully. The problem appears to be related to the size of the document.
Has anyone advice for me on this? Obviously, I need to create a single index a single time (it cannot be done piecemeal and then combined.)
Thanks,
Joe

 

Looks like it should work if combined using INCLUDETEXT.

Since Microsoft (and user groups I can locate) don't mention a limit, I wonder if you are running into a PC specific limitation rather than a Word2000 one. Any specific information on max indexes is somewhere between difficult and impossible to find but I'm curious if you would have better luck with more physical memory in the PC you were using to index. Just a thought.