Using
Google's Local Business Center can help improve your Google rankings and help control what gets displayed on the SERP. Additionally, this is a method in which you can edit your Google Map business information.
In order to get started you'll need to verify that you are indeed the site owner. You have a couple of different ways Google allows you to do this. It's very easy and instructions are clear.
Once in the Local Business Center you can enter basic information about your company. Such as address, phone, hours of operation, preferred URL, etc. You can also add/edit your business photo and create online coupons for you company. The newest feature is to allow you to associate up to five YouTube videos with your company.
These are great things to do for your company's online presence and I would highly recommend taking advantage of them.