The contractor doing the exterior lighting on my house found this insect. Since it wouldn't pose I had a tough time getting a good clean shot of its most distinguishing feature, a dorsal shield, resembling a fan, that stands up off its back. It didn't bite the contractor. Maybe he was just lucky.
If you have an image, you could attach it to the message you post for a better chance of getting an identification
Having said that, I can in fact give you some information about your insect. It is an Assassin Bug, in the family Reduviidae in the Bug order Hemiptera: http://en.wikipedia.org/wiki/Reduviidae . There are a lot of different Assassin Bugs, and I cannot tell you which yours is.