I had a quick look at it. Not bad for 4 hours work. Just a few things I noted:
*On the main page, there's a mouse over image and a link for the Home image on the left. On every other page, there is no mouse over image for the respective page (eg on the Services page there is no mouse over image or link for Services).
*The text 'Taking Your Home Theatre To The Next Dimension' could be aligned differently. As it is it looks strange when the page title is indented so much, and the slogan is not. Also perhaps the page title could have the same alignment as the page contents.
*On the Services page, there should be a gap before [and after in some browsers] 'Including Projection, HDTV, and Surround Sound'.
*It may just be me, but IMO it would look better to remove the Home link at the top left of the page and move the Feedback link to the left column.
*The Feedback page and mail link at the bottom seem to have the same purpose. Maybe the mail link should be replaced by a link to the Feedback page, and/or the email link be added to the Feedback page as an alternative.
*Get the page validated at
http://validator.w3.org/. This will make the site more likely to work and look the same in all browsers (already there are differences, eg there is more space between the links on the left and the page contents in Safari than IE).