Re-activating Blackberry Internet Service on my phone

I have a post-paid plan on Vodafone India on my SIM card (with BIS activated) but I havent used the phone/SIM since Jan 2011 (8 months) cos I left India for a few months to take a work position in Africa. I also had BIS de-activated from my Blackberry in Jan 2011 . Now I am going back to India for a one month holiday, so what do I need to do to re-activate BIS on my BB (model 8900), and what documents will I need?Thanks

You only have to make sure that your number is active. If its active, then you can activate BIS by calling on customer care. No documents is required for BIS activation. They will validate on call only and activate BIS within 24-48 hrs.