i JUST purchased a new 8800 and have not yet subscribed to BES/BIS as the plans are very expensive here in India. I had a Nokia on which GPRS and EDGE worked and I was able to access the Internet and Email.

I Registered the service books and received the book of the provider but can not access the internet for browsing or emails as the APN (WAP transport) is locked for BIS/.BES: blackberry.net

I have changed the TCP->APN to airtelgprs.com (this is the service provider).
I have also installed Opera

I am still unable to connect to the Internet of the TCP-APN

Need Help Immediately.

To use the TCP/ APN settings you at least have to have a basic Data Plan. Does not have to be a BlackBerry Plan.

But you will only be able to use Opera and third party applications.

how to get a BlackBerry Plan???? please help - thank you

Talk to your carrier. You need a BB data plan for email and the BB browser. Opera Mini as mentioned above will work but it is only a poor work around at best.

Your carrier should properly provision the device and send the proper service books, plus set up BIS access.