I worked in USA from Sep-2007 to Mar-2009. I filed my tax returns for 2007 & 2008. But now I am back to India, and I need to file my tax returns for 2009. Can anyone suggest me how to file tax returns from India? I calculated that I would be receiving some refund. How do IRS send refund to..

Yes, you can file return from India and give your India address. IRS will send refund at your India address.
It appears that you will file dual status tax returns if you filed resident return for 2008.

Thanks Mukata for your reply.Could you . Give your contact details (e-mail or phone number)