A word of advice: If you expect comprehensive answers, then you should provide more information. I am no entrepreneur so I can't give you any advice on the topic.
Some useful details that may help others assist you would be:
1. What sort services are you providing? Only browsing? Gaming?
2. Where are you planning to set up shop in CHennai?
3. What will be your approximate rental rates if renting at all.
4. Do you already have any hardware? If not, do you have any plans of what you want to get?
5. How many PCs?
Please do not expect to get a satisfactory response, let alone a business plan, from a three line post. Any one who is going to help you will expect you to do some ground work before posting your queries here.