Not a bad site, a few suggestions though:
1 - you should get a toll-free number and put it on there. People love to call toll-free numbers and you will pick up more business that way
2 - The main screen is fine, I would lose the green page background and go to white. It has a strange blend and a little too colorful to keep me interested...change the background color to white to offset your green logo and things.
3 - get more
SEO on the site, there are no META tags or keywords, you will want to at least do that to up your position on search engines
4 - change "Customer Services" to either "Client Services" or "Customer Service". The plural you have now seems odd to me.
Otherwise and overall a good site and the 1959 makes good promo for a trustworthy agency.