Here I'm uploading a step by step approach document to Configure DNS to use as a Load Balancer for an EBS Instance.
Note: After putting IP Addresses and Hostnames in DNS, do not forget to comment entries from /etc/hosts file.
By Default, /etc/hosts file has precednce over DNS which is mentioned in /etc/nsswitch.conf. Edit this file to change priority.
Your suggestions and feedback are most welcome !!! Let me know if you want this document on your mail id.