I like the website a lot, it fits well with the company. I would add some dark to lighter blue gradients instead of just "pure" blue. The rest is great.
This isn't my favorite design, but I think it works for your purposes. I think it could just be a bit more exciting and interesting than it is currently. But it's clean and easy to read, well laid out and I think it will work for you.
It is functional for it's purposes and that is what is most important in this case... it fits its content and objective. Why put more "design" into something that doesn't need it. You can always ad some small subtle detail to the nav etc. but I think it works as is.
I am assuming that you will be putting some sort of snazzy marketing fluff / or functionality into that huge image area... if not I don't see the purpose of having it so large.
Kudos for restraint!
Yeah at this stage the image is kind of a placeholder. Marketing will come up with something to add to it(tagline etc)
Also looking at doing some stuff with CSS3 on the site for the text, buttons etc
I agree with what has been stated previously -- the design is kind of boring, but that might actually work in your favor given the purpose.
Simple and straighforward design, I think it fits the purpose, though can be more visually engaging.