BSNL Prepaid GPRS
Can not access GPRS

I'm using a Nokia 3110 C set and had a postpaid GPRS connection earlier. Then I had no problem with using GPRS and even with Opera Mini, GMail, Yahoo Go! etc.

But recently I have migrated from post-paid connection to a pre-paid connection keeping my phone number same (9433208585).

I've downloaded the required settings for BSNL EGPRS, BSNL EMMS, BSNL streaming etc from this link http://www.cellone.in/cellone_msp.htm.

I've also activated my GPRS service by sending required SMS to BSNL but, I can not access GPRS anymore.

Kindly help.