I built this site, it's six pages, The link to Testimonials and link to blog, keeps shifting abit to the left. Why is this. This is my site http://www.mts.net/~conquer/future/index.html

When the page has enough content that vertical scrolling is required, the browser adds a scrollbar. The scrollbar takes up space, so the available display area is narrower. Since you center your content, and there is less space on the right because of the scrollbar, the content shifts left.

So is there away i can fix this?

Yeah. I'm not totally sure if it's a good idea or not, but it can be done.
http://www.hicksdesign.co.uk/journal/535/f...now-even-better