I've installed the album to http://heroshall.com/zenphoto/ and would like to know what do I edit to center the 15 image layout in the albums? Do I edit the themes/default/image.php or the zen.css file?

Thanks!

The CSS file would probably be the best. Depending on what you want to do exactly, you might have to add a DIV tag or two in the php files of the theme.

Solved the problem

Went into the .CSS file and changed it from

.imagethumb {
float: left;
}

to

.imagethumb {
float: left;
margin-left: 17px;
}

Hope this helps anyone else with a similar problem in the future!

Used these forums to assist me in my solution:
http://www.highrankings.com/forum/index.php?showforum=60