Aside from the requirement to change from left to right, I'd suggest a
two-cell, one-row table, with borders applied selectively. Given the
swapping requirement, however, a frame anchored to the photo might work
better. See http://sbarnhill.mvps.org/WordFAQs/MarginalText.htm

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Suzanne S. Barnhill
Microsoft MVP (Word)
Words into Type
Fairhope, Alabama USA
Word MVP FAQ site: http://word.mvps.org
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"Amateur" wrote in message
...
In Word:
I wish to move photo captions to left or right of photo (not above or
below)
and reverse position to right or left if pagination changes; I wish to add
text as necessary to photo caption and change width or length of caption;
I
wish to anchor caption to photo; I wish to move photo AND caption together
up
and down text as required; I wish to delete BORDER ONLY round caption if
necessary