Are you creating the 'resource/fonts' folders on the memory card?
You need 4 copies of the font called nohindisnr60.ttf, nohindissb60.ttf, nohinditsb60.ttf and S60ZDIGI.ttf.
Also, you need to reboot the phone.
FWIW I have just tried this on a 1 day old
N95 that has made a couple of calls and nothing else, works fine on the 'virgin' phone using the v11 FW.