I want a laptop of 15.6" to browse, chat and video chat...play games and watch movies, please suggest me a laptop with a configuration which I should purchase.
Well, first off I would like to ask which games do you plan to be playing on it and at what settings?
a better choice would definitely be an i5. but if the games you mean only flash games or something like that then an i3 could do a good job at it as well.
How much are you looking to spend?
What is your budget?
At the least, make sure you look for something with dedicated graphics card. I would go with the i5 sandy bridge (minimum i5-2400). Definitely an i-processor