> So, I'm switching to file sys access.  No I have to figure out how to
> identify and index the new files and then just merge the indexes.

To identify new or modified files, you can do this (Unix only):

touch new_timestamp
find . -newer timestamp -print >new_files
mv new_timestamp timestamp

Then have swish only index the files in new_files, then merges the indexes 
as indicated before.

Stephane