Wow, this is a nice site. And yes, it does look professional without any flashy graphics. It's almost flawless. I would only suggest to give some sort of effect or at least change the text color and font for the top right text: strategic development, campaign planning etc. Also, the client section/portfolio could use some graphics and images of their works. Other then that very kool site. Keep up the good works.
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Dust fills my eyes / Clouds roll by / and I roll with them / Centuries cry / Orders fly / and I fall again
Afford best design, implement best solution. Outsource your web design.