1. You can visit friend or family of friends who perform them in groups through their associations.

2. You can buy elaborate pooja cassette or CD with directs you step by step what you should do and what you need during the pooja and follow it accordingly.

3. You can go to the closest hindu temple and pay for the pooja there and get it done

4. You can request temple to send someone to help you perform the pooja, but this will cost you some extra money.

Well these are few in the list.

Refer to this link:

http://www.harsamay.com/VinayakaChavitiPuja.htm

This might help

http://www.harsamay.com/VinayakaChavitiPuja.htm

http://www.TeluguSamay.com/VinayakaChavitiPuja.htm