Ok I have a brief summary for you

GOOD:
*The top navigation bar makes for a great interface and navigation. Easy to get to any part of the site at anytime.

*Color scheme is spot on, the green is used really well to highlight important information. However the contrast on the links on the background is hard to read more on this later.

*I really like your Home page top banner: really pushes your main selling point of a free quote.

*There is a lot more I like, but I think you are more interested in the stuff I think needs improvement.

THINGS TO IMPROVE:

*I mentioned the links before. When that green is on the light colored background it can be hard to read. I would say blue for the links to help this, but you are using blue for headers which I like. So my only suggestion would be a dark bold grey. You used this in to highlight some other test through out the site. Although this is really a balance of hierarchy with readability. Having the green makes the site look better and more fresh, but the grey would be easier to read. You could keep the green and change the background to even the medium grey but that would be weird too.

But in reflection, the green is readable and it is not a huge amount of text. Plus the green goes a long way to carrying your color theme, if you took it out it might be lacking. After taking a second look the only place the green links really bother be is for "sample of current clients". Perhaps you could put med grey background just behind there, saying it is a separate section and you would still keep the theme of green links?

*This one bugs me, but I a overly picky so if you like it keep it...I doubt most users will not notice. But your background image "body.png" sticks out on the left side. On the right side it stops with the text frame and is all nice and aligned. But it is sticking out on the left side beyond the text frame and "home" in your top navigation bar. If I just look at the top half of the home page, it looks off center to me because of this.

*Another picky quick thing on "H2.gif" [media]http://www.acuwebservices.com/img/h2.gif[/media] and all header background like it. (I am assuming H1 H2 H3 H4 all look alike? ) I think they should have a ever so slightly beveled on all 4 corners. Even like 1-2 px, it is just a little to sharp for me tastes right now.

*Your front page contains a lot of information, which I am certainly not going to read. However it is really well organized so I can skip over the stuff I do not care about. If you were to remove stuff however the page could look like you have a lack of information and services to provide. So if you are really anal maybe tweak it, otherwise I think it is fine...maybe take some of the descriptive text out of banner1, banner2, ect?

*Your subpages "Webmaster Services" "Website design" ect are a little lack luster compared to the home page. Which is ok, they are no supposed to be the wow look at me page, they are supposed to be the tell me info page. However I think they can me easily balanced by just making a graphic for the top heading "Webmaster Services" "Website design" ect...similar to what you have in your banners. The blue on the right side of your subpages is over powering. But it really just needs a subtle bump. For example your web applications header can have those puzzle pieces behind it at like 15-20% opacity.

*I always like things explained to me in pictures, it conveys a concept quickly and easily, but is a lot harder to do. For your SEO Service box on the right side, it is balanced really nicely with blue box at top, grey in middle and the image at the bottom. However SEO means nothing to me. The text in the middle I might read, or since it is off to the side I might not bother. However the image I will definitely notice and the way you have it set up now is excellent. Only thing I might change is zoom in on the "web search" screen cap. If you study the image it is clear, however if you glance over it, it looks like a jumbled mess. It took me awhile to pay attention to it. If I was looking to have a website made I would most definitely want to take advance of that service. So you are right to have it always appear on the right side of the screen, just maybe change the image?

Well that's it in my brief over view...over all it is an excellent site which has been fine tuned. I am a designer, and thus am super picky. You have the experince with tweaking the site and I am sure have tried a number of combinations, so I have no idea if my suggestions will better your site. I more so made them to see if I could catch things you have not considered. It is also 2 in the morning so my words may not make sense, if you are confused by anything I said please ask me for clarification. If I come across some extra time I'll take a more in depth look at it.