A transliteration based input method
Aksharamala is a standards based input method for Windows users. The product is mainly designed for Indian languages for direct input of text into popular desktop and web applications.
Some examples are: Microsoft Office (including word, outlook), OpenOffice, various webmail products such as Gmail, various messenger products such as Google Talk, AIM and Yahoo! Messenger.
Give Aksharamala a try to see how it can help you!