dear laalee,
you will get the rights issue form by post to your mailing address. Apply to the respective banks indicated near to your place. dont worry about the cost of your acquisiton. It is a very good long term growth stock. apply and enjoy your returns for long time.
See my reply to the other gentleman. If you have a demat account you can ask them the details. If you have the shares with you physically, you will be intimated well in advance by the company about the rights issue. This is upto my knowledge.