If you have a conditional green card you are going to need to apply for a "good faith" marriage exception to remove the conditions. You will need an attorney to process this successfully, my firm handles such cases in NY.
Law Offices of Nicklaus Misiti
212 537 4407
Legal disclaimer: The statement above is general in nature, as not all the facts are known. You should retain an attorney to review all the facts specific to your case in order to receive advise specific to your case. The statement above does not create an attorney/client relationship.