I found useful articles to use for Dawah to Hindu:


CONCEPT OF GOD IN HINDUISM
by Dr. Zakir Naik

This is a good one. It gives references of Tawheed in Hindu scriptures.
http://www.irf.net/irf/comparativere...nceptofgod.htm


COMMON QUESTIONS ASKED BY HINDUS ABOUT ISLAM
by Dr. Zakir Naik
http://www.irf.net/irf/comparativereligion/

and more Dawah materials can be found here
http://abdurrahman.org/comprel/index.html

wasalam
-SI-