I'm sorry, but i don't really think any of them work. I mean...
menu: buttons are just too large, the boxes are a little crazy and it just doesn't seem to fit.
logo: not a bad logo, i just don't understand the effects applied to it. What's the purpose of the Metallic? What's the concpet behind it? I mean, your name is Conceptual Design, but i see no concept in this design (or the rest of the site)
Colors: Are very freshmen designed "business" colors. You've got a safe grey/blue color and a complimentary red/orange. i don't see how a design company wouldn't do something more sophisticated than dull complimentary.
layout: Is messy. The uninspiring background image, the transparent boxes with odd wholes in them, too many drop shadows, and other effects that arent necessary. And why is it so tall? Does it need to be? a lot of views are going to have to scroll, which i hate unless it HAS to be. And finally, your font choice (Futura?) is not a websafe font, so that will probably either change or your page will be nothing but images.
sorry, not trying to be rude, just giving you my opinion
-JE