I upgraded by site to professional and now the pages are no longer centered on the computer screen. They are more to the left. How do I center them again? Or is it that the page is now larger, and so appears not centered?

Seems to be gone, actually. Unless you made a typo. Or perhaps the domain is very, very recent?

her site is drbinteriors.net

i myself don't know much with using templates or anything or even using the wizard and more things too much here.