Can anybody provide me information about Wi-Fi & 8051 interfacing?
"As i am new to Wi-Fi....i want info regarding the protocol structure"
But, as you're using a "Wi-Fi transceiver chip", you don't need to worry about that - the chip does it all for you!
As you say, all you need to do is to study the chip's Data sheet - and do what it tells you!
"any sample programs available for reference."
As you haven't said what chip you're using, how can anyone give examples for it!
For examples of using the chip, look to the Manufacturer's website for application notes, examples, and all the other usual supporting information...