Page Sizes

I am making a fan forum for a website and am having some problems keeping all the pages the same size. I used a pre-made theme and am editing it up a bit to fit my specific theme. By 'pages' I mean FAQ's, Calender, going to create a thread or make a post, viewing your profile, etc. Basically any page you can access. I like the size of the Home page, but I can't seem to figure out how to make everything else that size as well.

I have found a section to where you can edit up the coding of the template, but I can't find where the sizes and what not are, or the ones causing the size differences per page. Basically the location I am talking about is Administrator Panel - Display - Templates modified and published.

Any help would be greatly appreciated, and I am sorry if this is such an obvious fix. I am very much new to creating forums on here and don't know too much about it just yet. So bare with me! Hehe.

Thank you!

- Nikki

Aww, no one knows?

they should be all the same size?
do you have a screen shot or link you can post so we can see what you mean.

Yes here is a link to the forums I am making:

http://stardollbazaar.forumotion.com/

When you click around you will see what I mean.