I don't know what trouble you are having. However the airtel site says,
"iPad - will work only on those with an airtel 3G or GPRS connection."
I think that means that the iPad needs to be one that is more than wifi only.
Please do not post twice on your issue as it divides the information given and makes it confusing for members to follow. It is also against our forum rules. Your other post has now been deleted.