I think you need to consider if centering all the text is really necessary. Most people find it alot harder to read large sections of centered text, so you may be better looking at using left-alignment for the main body.
Also, I think you need to consider using some form of consistent naviagation bar on all the pages, rather than having to always go up to the home page and then down to the next page you want to look at.
I think you also need to try and sort out some of the images. Some of them look a little distorted and doesn't necessarily make your business that professional. Also, some of the images are being resized by the browser - that has to download the fullsize image, so resize the images to the size that they'll be displayed at - otherwise your just wasting peoples time as they wait for larger images to download.