The technique you're looking for is called Phishing .
It is a technique where you create fake login pages and collect information. I must tell you that this is a complicated process and you need to know a little bit knowledge of creating websites and websites forms. I have explained this process on my blog. Take a look and go to http://www.piratedthief.com/2012/10/advance-hacking-hack-any-online-account.html.