You need to install any of the nepali unicode font to read or write nepali , commonly used unicode nepali font is AnjaliOldLipi True Type Font . Please following the instructions to install unicode nepali in your system.
There was no common nepali ascii structure for the old fonts. so each vendors use different nepali fonts with different keyboard layouts. this makes difficult with nepali users as they need to install each nepali font from different websites like malayala manoram (manoram.ttf) mathrubhumi.ttf etc..
Unicode font is international