Inserting images into a form

[emptyspace]

Hi

I'm trying to create a template, based on an existing document and i would
like the user to be able to insert an image into a form. However, the layout
of the document is provided by a table and the box (cell) that the image will
fit into is next to another column. Is there anyway that i can make it so
that just the table cell can be modifed (and therefore a diagram can be added)

I have a feeling that the answer is that it's currently not possible, but I
would like to be pleasently surprised.

Thanks in advance,

Dave