Updating captions from Table 1 blah blah blah to Table 1. blah blahblah

Hi,

I've got a doc w/about 100 tables/figures. Style guidelines suggest
captions read Table X. blah blah blah

Is there a way (other than manual) to update my existing captions,
which lack the "." after the table number?

Also, I don't want the figure/table TOCs affected. I tried wildcards/
search/replace, but the wildcards don't seem to like the field codes
that are behind the table and figure numbers, e.g.{ SEQ Table \*
ARABIC } "

Thanks!