I want to know how can I activate internet on my postpaid tata docomo number and then how to receive its settings for gprs . I want to activate 3G gprs on my postpaid connection of tata docomo . please help me in this concern.

You only need to call customer care or visit nearest customer care and ask them to activate one of the GPRS or 3G plan on your connection.

They have following plans for 3G in postpaid
Rs. 99 300 MB
Rs. 149 512 MB
Rs. 199 1 GB
Rs. 1001 5 GB
Rs. 2001 15 GB