I did another check of your web site, and notice that your knife photos are 590px wide. On a small screen monitor (800x600), that only leaves 210px for everything else including the space around everything, your borders, scrollbar, and your text description.
You might want to set your monitor resolution to 800x600 and see if you think anything needs adjusting.
You should view the page with browsers other than internet explorer, and you will see some problems with images not loading due to html errors. You can get a free copy of Firefox, and can get addons that will show you the errors.