Well I don't even know where to begin to respond to some of the comments that have been directed at me. Firstly, I did ask for advice and opinions so I was ready to accept whatever came my way. Secondly, it is very hard to give someone a complete picture of what is occurring in a short post and it was pointed out multiple times that perhaps people needed more information to give a good opinion and/or advice.
I guess I call DH's issue an addiction because he has admitted that he cannot stop. To me if you are engaging in any behavior in a compulsive manner to such a degree that you are physically unable to stop then that is an addiction. As I also mentioned one of the biggest issues is simply an issue of trust. Call me old-fashioned but trust is probably the single most important part of a marriage relationship. A marriage without trust, IMHO, is not a good marriage. It has been touched upon that perhaps my real problem with DH is an issue of trust and not an issue with pornography. That is partially true - I do have an issue with trust in this area but I also have a problem with the pornography.
I have been pretty much made out to be a prude in this thread and several others that have sprouted up on various boards. I do not have a problem with nudity in most contexts. I have ZERO problem with DH looking at art or even the SI swimsuit edition. I have a problem with the types of material that he views on the internet. If this was just an issue with Playboy I would probably have a little more tolerance although I certainly would not be happy. When I mentioned I knew he viewed pornography when we were dating it was more of the soft-core Playboy variety. Over the years it has become racier for lack of a better word.
I do want to thank those of you who took my post seriously and didn't just feel the need to say things such as my DH must only look because he doesn't get any.

I even appreciate those of you who disagree with me but where able to express your disagreement in an adult manner. I am very well aware that strangers on an internet bb are not going to give me the answer to my problem but I was hoping that maybe I could be led to a helpful resource to help DH and I deal with this issue. We have talked this issue to death and we always end up in the same place so any new resources that could be directed my way could only help.
Ending my marriage is not something that I would ever take lightly. In fact I never mentioned that I was considering ending my marriage but apparently many thought that is what I was advocating. I simply stated that I was at the end of my rope and that I kicked him out of our bedroom. He understands that me not wanting to sleep in the same bed with him is much more an issue of trust than the porn.
I was looking for help in dealing with this issue. We have done couples therapy in the past, he has been in therapy on his own (where by the way the therapist did feel like he had an addiction) and we have not had much success. Things may temporarily improve but like all addictions there are often relapses especially since DH does not feel that he really has a problem.
Once again I want to thank those of you who were helpful.