Hello, pls I need serious advice on a big issue. I came to the US on student F1 visa in 2002, then got on h1b before my then employer filled an EB3 based green card petition for me in 2007. However because of the retrogression, I have been stuck on the queue but had no problems renewing my AP and EAD. In may 2009, I got married to a US citizen, but did not want to go through the process all over again initially, but changed my mind and filled a new 485 concurrently with an i130 in March 2010. Everything has been okay and we got our interview letter for May 2010. But things just took a toll for the worse in my marriage, my husband hit me for the fourth time last night and I want to walk away from this marriage. How best can I withdraw my fb based green card and just continue with my eb one? Should I just go to the interview and withdraw it there? Pls help.