it seems that ur from extreme northie, be cool. visit http://www.harappa.com
coming to your point, its a religion.OK. So you are followers of religion that has personal God. But we(Harappa) are really dravidians, and we worshipped Lord Shiva, in non-form, this universal or nature god has no end.
Proof can be given that Aryans are Vaishnavism. visit 1)http://www.geocities.com/Athens/Ithaca/1335/Rel/visnu.html 2)http://www.atlantaharekrishnas.org /Default.aspx?tabid=93 (read -"What is Vaishnavism?")
also read http://www.tamilnation.org/forum/shanranjit/saivaism.htm#Rise%20of%20Vaishnavism
Have you read Ramayana, actually Ravana was a Dravidian and an devotee of God Shiva..but for some purpose they put God Shiva in their writings of Ramayana. To destroy Saivism, these things were written. Also the Dravidians were the Harappan Civilizations. Read http://www.harappa.com.
Aryans comprise UP,Bihar, North WB, HP,Punjab, Northern Rajasthan, Northern MP and NOT THE CENTRAL AND SOUTH INDIA.
Harappa civilization extended upto Gujarat, but due to some natural calamities and/or invasion of Aryans, they were forced to move to extreme south like srilanka, Tamil is parent which gave birth to Malayalam, Kannada and Telgu...
Tamil sangh comprises of three- First Sangh-washed out due to some natural calamities Middle Sangh-washed out due to some natural calamities Last Sangh-now in Madurai as per the kings
so to save and hide from Aryans they moved down south, a