Page Post – Problem With How It Looks

Hi. All posts on my site visually look good, but all the Pages are not presented nicely.

All the entries/articles for each page are way off the page. For examples see
http://cleanbibs.com/blog/2007/06/?page_id=2
http://cleanbibs.com/blog/2007/06/?page_id=27

My question is: do you know how I can make this look better? Should I be doing some tweaking in the theme editor? If so, where? and maybe some specifics as to which exact line?

Thanks a lot for your help