Changing theme to Moesia display problem

HI,
I have just changed to Moesia Theme(had Twenty Eleven theme installed)
The Moesia theme has picked up all the info, pics, SEO etc from my original theme pages, but it is displaying the info only in a part of the page ie will not display across the whole page. Can i change these limitations or will I have to create new pages in my new theme and re-write all the pages to suit the new theme?

Thanks in advance