Thanks so much for the submissions! I really like the thought behind the hands coming together. Overall, I think the graphic in #45 works the best. Very nice job. Perhaps if you have a free moment you can try a slightly different type face. Perhaps something that really brings across the "professional" vibe. All and all, great job!
Also, I like the idea behind the "puzzle" notion in #46, but I feel that it might be a little hard to see when at a small size. For example, think of the icon in the URL bar on a web browser.
Thanks for your time and thought into this contest.