Foradian Technologies have made the first font with support for Indian currency symbol.
Click here to download: Rupee.ttf
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.
Main source : Foradian Technologies Blog
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New best Rupee font !!!
http://shubhamshastri.blogspot.com/2010/07/rupee-font-created-by-indus.html
u can download it..
IndusRupee : Rupee Symbol Font for Computer & Mobile Phone, Created.
gr8!
need to work with the fonts, for the same only seems to b compatible with Arial!!!