Have you already started using the New Rupee Symbol? – most probably not. The computer keyboards are not yet equipped for that. But there is an alternative way you can use it in documents and spreadsheets. Download this font developed by Foradian Technologies and once installed, you can use the “`” key above tab button on your keyboard and you will see the Rupee symbol appear on your document.
Additionally, Indian Government is proposing an Unicode Character U+0971 to be assigned to Rupee Symbol. However, getting the Unicode to be a standard Character set is sure to take some time (if at all it does). If that is done, you will be able to type Rupee symbol character as easily as a $ (US Dollar) symbol.
There is also an excellent presentation on Design philosophy and its uses, created by he man behind this Rupee symbol – D Udaya Kumar. I think you must see this if you have already not.