Is this an adjustable rate mortgage? Geez.. I hate to see this happen but have seen it time and time again. I could give you advice and what you should have done but that woiuld be like closing the barn door after the horses were aready gone. With your scores, and the current outcry against the subprime lending industry, the likelihood that you would be able to refi with a major for favorable rates are slim. You may want to try FHA for refi.
Glad that you can make the payments unlike so many others who wil find their homes foreclosed on.
For anyone else considering an ARM. Please be pristine with your credit during the years that the lower rate is in effect. Would hate to see anyone locked into a mortgage that htey could no longer afford.