adjusting the look of the albums

[kelizabeth]

So I am working on the layout for my coppermine gallery, and I have run into a problem.

I want to adjust the table containing the thumbnails in each album.  I know the background can be changed in the style.css, but I want to change the width between the thumbnails, and the content displayed on each album page.  I want each category's (photography, etc)  albums to be listed in that sidebar (they're numbered e.g. 01 02 03 04),  My album is at http://endocentric.org/2006/. 

It doesn't look too great yet as I'm working out the kinks.  The sidebar links are temporary.  The problem, again is I don;t know where to go and fine-tune these details.  I suppose I am going beyond changing the theme, instead changing how coppermine itself functions.

can anyone point me to the file I can open to start adjusting some of these settings?  I've run into a brick wall.