You should teach your dog not to jump, not to bite and to have bite inhibition.

Here is a command which also might serve you well, called "settle". This site has a lot of other articles on it which might be helpful to you and training him.
http://www.doggiedoor.com/settle.shtml



Do you leave him any toys in his kennel while you are gone, do you leave a TV or radio on for him?
I know there are also things you can buy that can help calm dogs down, who have problems like this.