Xiao bai tu, please help for my questions.

My request for the removal of the conditional green card has been approved(marriage)since May, 2006. We moved from San Jose to san Diego at July,2006. I called the USCIS center to changed our address after that. I've been waiting for my GC to be sent by mial until now. I called them December,2006 for asking how come my GC hasn't sent to me yet. They told me that they were waiting for me to confirm my address, then they said that I have to wait at least 30 day to reeive a confirmation letter before sending me the GC. 3 days ago, I got a new job in Pennsylvania. I have to move to there 2 days later. My questions are: 1)Do I have to call them to change my address agian? 2)My wife still lives in San Diego, we cann't live together after my move. Will they cancell my GC? 3) If I need to be out of country before obtain GC after moving, should I go to the local office in Pennsylvania to get stamp on the passport or San Diego office? Thousands thanks!