Prabhat Ji, as you read this you are sitting in front of the biggest encyclopedia in the world.
Take a look here: http://search.conduit.com/Results.aspx?q=Sri%20Ram%20Navami%20&ctid=CT466962 (The first article was interesting...)
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Namaste,
Shishya
ॐ
ॐ सह नावतु । सह तौ भुनक्तु । सह वीर्यं करवावहै । तेजस्वि नावधीतमस्तु मा विद्विषावहै ॥
"Together may we be protected. Together may we be profited. Together may we do a hero's work. May we learn intelligently. May we never hate one another."
-Brihadaranyaka & Taittiriya Upanishads