Katy,
I just realised Spawn won't work - it states it doesn't support image maps -
which is what your "hotspots" are.
So, I expect no popup window utility using javascript will work the way you
want (which is unfortunate).
My original suggestion, change the 'target' to "New Window" when making the
hotspot hyperlink will probably work, since there's no Javascript involved
(which I think is what the trouble with the popups not working).
It will still get the menu bars, tool bars, title, status bar etc, and you
won't have any control over pre-setting the window size, but that's the best
I can suggest.
One other thing I could suggest, is a utility to 'slice' your image/banner
up in to segments, which is then reassembled into a table. Then you can
link to an individual 'slice' of the whole image - that way the popup window
behaviour or the Spawn addin will work as you're simply creating the link
from an image (which cosmetically looks like one whole image). This way you
won't be using the hotsots feature, but linking directly from the individual
slices of the whole image.
There was one program I used to have (still do somewhere).
"Picture Clip".
www.iron-fe-works.com
A very handy utility.