Documents for capital gain tax exemption

Dear Experts, I am about to sell my apartment on Oct 2013. My capital gain is around 9 Lakhs. I have purchased a property in a different town on Jun 2011 but got possession on Feb 2013 (I have the possession letter mentioned same). My questions are: 1.Am I eligible for Capital gain tax exception as I have got the possession within the time frame of 1 year prior to sale? Or does it depend on the sale deed date? 2. If I am eligible for this exemption what is the procedure of availing it? Whom i have to approach first? 3. What is the list of documents I should have to claim the exemption? I have notarized sale deed, possession letter and all the receipts of the payments done to the builder. Is this enough? 4. When I sale a property do i need to first open a Capital gain account before taking the payment? 5.Can i open it with any bank? Thanks to all of you in advance. Hope to get proper advice on my queries. Regards Anasua