Overall reaction: I like it! It looks clean and professional. The headings and subtle use of colour are elegant, and the gradients add visual interest.
I'm not sure about the large photo in the header area of the hardware switch (bg-h1-business). While it has a nice graphic element to it, it doesn't really "say" anything. Perhaps something more focused on your customers might be better, say some photos of people? You might consider using a different photo on each page, to add interest and make it clearer that the user has moved to a new content page.
And, you know I'm going to comment on this: why does your designer insist on continuing with archaic fixed-font-size and fixed width layouts? They are easier to design, but they do not adapt to each visitor's settings. On a large high-res screen of a middle-aged visitor, that visitor will have your site's content sitting in the centre of a lot of wasted screen real estate, and may be unable to read the text without zooming.
I am not WHB staff and I am not paid.
I provide help in these forums on my own time.