Its not an easy task to type Malayalam in Computer. So we type in English or Manglish and then will convert to Malayalam.
Manglish conversion :- How its done ?
To use malayalam in Wordpad or in Word, you have to download malayalam font first. Then put that font in your fonts folder in Control panel.
Now Malayalam font is active in your PC. Then go to your word processor and select font (Malayalam font). Now typing on your keyboard will display malayalam on your notepad / wordpad.
Apart from this technique you can also use English Malayalam Converter. But those softwares also does the above method which we explained on previous paragraph.
Another solution is by using Character Map which comes along with Windows OS.