You can use PayPal as a payment gateway and accept Indian National Ruppes currency. When the customers complete the sale the funds get sent to your PayPal account and convert to US Dollars. You will need to make sure the settings on your PayPal account are set to accept payments sent to me in a currency I do not hold. Click on the profile link (under my account), click on Payment receiving Preferences (under Selling Preferences), go to Block payments sent to me in a currency I do not hold (the first section) and either set to Ask Me or No, accept them and convert them to U.S. Dollars. I hope this makes sense.