Center 4 pictures in a row in Atahualpa – no gallery

Hi, I’m a newbie with WP and no coder.

I can’t get my pictures centered in Atahualpa.
In IE they will only align left, in Chrome they are centered, but, the right margin seems to conflict with the some other margin / padding.

It’s like there is some 10px too much white space on the right side.
I have now set a fixed width for the site, so now IE ‘matches’ Chrome, but still they aren’t centered.

My site =terror kids. com (please do not refer to it by it’s full name as it isn’t ready yet, so I don’t want the word to be indexed)

It’s very much in building state, I intend to use it combined with a cafepress/spreadshirt-like clothingsales module. That’s why a galery is not what I desire, because I want to jump to the sales module if someone clicks the picture.

Apart from this problem, I’m very happy with Atahualpa, as it’s easy to use and I’ve learned a lot from it.