I am a lawyer, and I am telling you GO TALK TO YOUR LAWYER. If you do not have one, get one now. It is better to spend a few bucks now than to get sued and possibly lose tens of thousands of dollars.
http://www.lawyers.com
or
A lot of lawyers shy away from adult work, but just explain that you have an intellectual property issue that you want to prevent from blowing up into litigation. They should be glad to give you an initial consult for nothing, and remember, always, that fees are negotiable, just don't be cheap because you get what you pay for.
You can ICQ me later if you want, but I am going out to see the Scorpion King, so I will be away for a few hours.
ICQ = 381427