It is unclear what do you mean by "renew" your green card. If you have conditional green card, you must file Form I-751 to remove condition. CIS will not approve your N400 without first or concurrently approving your I-751. The fact your interview was in 2009 but you still have not received a decision is not a good sign. If your lawyer did not respond to your inquiry, find another lawyer.
Answered on Oct 13th, 2011 at 10:18 PM