On April of 1997 my dad as a citizen put in application for my sisters and I and we were accepted the same year on July 1997 but we have not heard anything else after the last correspondense we recieved in 2001. just wondering why it has taken so long for our green card to arrive or any notice what we are to wait any longer and how much longer. Can you please let me know what we should do?
There are too many unknowns in your situation for me to be able to answer. First, you need to check and see if your priority date (the date your I-130 was filed) is current. You do that by reviewing the most recent Visa Bulletin - http://www.immigration.com/visa-bulletin. If your PD is current, then you can start checking with the govt.