nextgen-gallery help

On my ownage page I want to restrict the column width to somewhere between 3-4 because 5 images per row is way too big for the template and causes a break.

Also, I’m wondering if it’s possible to change “Full Size” (lightbox) to open in a new window, or even a chromeless window — if someone could help me it would be greatly appreciated — I can’t find the right code to edit — even if you tell me what files to edit, I’m proficient enough to do it myself!

Thanks in advance, Rob

PS: My site is NSFW (but it’s not that bad)