hi again arsondpi, I think i have resolved this now thanks.
for anyone else who reads this, I wanted to show the images seen at the top of this page with their titles, using the Visual Index format, but with no form of on-click action, ie grow, permalink etc... britagranstrom.com/site/info/sales/
The problem was that the images have a few lines of information which would normally be best placed in the caption field, but unfortunately the caption field isn't visible when you have no form of on-click action – only the title field can be seen. This meant that all the info had to go into the title field, and in doing this I found that the default line height here was much larger than normal and it looked weird when the text just a little below it had a much more normal line height.
So to solve this I managed to make sense of what arsondpi said. In the "base.css" file I added a line height of 1.3 ems to the following, all found at the bottom of "base.css"
#img-container .captioning .title
#img-container .captioning .caption
I originally tried to give them a line height that matched my "style.css" directly, of 19px, but for some reason that made no difference.