To get Internet services activated on your handset you may contact the customer care center of your service provider. In the case of the Reliance the service is pre-activated.
For establishing the connection on a Reliance, the user name is the phone number without the prefix 0 in the STD code. For instance, if your STD code is 0124 and telephone number is 3456789 then your user name is 1243456789. Your password is the same as your user name. When using the TATA Indicomm user name and password are "internet" (without quotes).