Free download of Indian Rupee Symbol Font for computers
You can now download the Indian Rupee Symbol Font and use it on your computer/laptop keyboards. It is very easy to install and can be used directly from Microsoft Word. Please read the full article to download and usage instructions.
Thanks Huseni.
How to use ?
1. Download the above attached font Rupee.ttf or the new version Rupee_Foradian.ttf
2. Install the font. (It is easy. Just copy the font and paste it in "Fonts" folder in control panel)
3. Start using it. 
How to type the Rupee symbol ?
We mapped the grave acent symbol – ` (the key just above "tab" button in your keyboard) with the new Rupee symbol. Just select "Rupee" font from the drop down list of your fonts in your application and press the key just above your tab button. It will display our new rupee symbol. Try it.
Limitations
The "Rupee.ttf" font is necessary to view the currency symbol. So as long as the new symbol is not encoded in to unicode font by default, we cant use the symbol universally.
via Foradian
http://letusbuzz.com/2010/10/fonts-with-indian-rupee-symbol/ Arial and Times New Roman font with Indian Rupees symbol can be downloaded from the above link.