Hotfrog INDIA provides information regarding Temples Of Tamilnadu. Temples Of Tamilnadu provides map services. Contact them on +919443560082 or by visiting them on their website http://www.templesoftamilnadu.co.in.
This site gives details on temples in Tamilnadu, including Navagraha temples around Kumbakonam and Navagraha temples around Chennai. Here is the featured list of temples