Do I have a strong enough case to sue my previous employer for firing me for reasons other than stated?

In April I was terminated from my position as a sales rep and the reasoning they used was misconduct due to not fulfilling my responsibilities as a sales rep. The real reason in my opinion is that my manager and I do not get along at all. I feel he is unethical and a hypocrite and refused to do some unethical things that were requested by my manager. I worked on a team with another ociate. In the beginning of 2008 she lost a major account due to non-performance. As a team, we both suffered in quota numbers. Her quota percentage was worse than mine. She had customer complaints, I had none. She lost accounts, I gained revenue in my accounts. She has been kicked out of two accounts, I've been requested to take over accounts. I spent three months cleaning up after her mess in those accounts. I have several ociates and customers that feel that my termination was a huge mistake. My ex-manager did unethvoice mailss, is hardly ever at the office, does not return phone calls and voicemails. 98% of region ociates can not stand this guy. I would have left everything alone and I have been approved for unemployment. My previous employer had appealed the decision. Our hearing was scheduled and the appeal was dismissed due to lack of participation on their part. They have gone after me even after terminating me. I was able to produce evidence that a national account manager agreed that I was doing my job and that I was producing results. This came from a national account manager that had been with the company for 28 years and I reported indirectly to him regarding national accounts for 7 years. I've been stewing over this for a while. Do I have a case? Was I wrongfully terminated. I am still searching for a job and struggling financially. Is there a lawyer that would touch this case? Where can I begin to search for one or research whether or not I have a case?