If you want to earn real money.. You just click 'Register', enter your required info, confirm your account. After completing confirmation, login to your account and click on 'View Ads' and view all the ads you will see on that page one-by-one (opening multiple windows will make you unable to view the ads). Don't do what the ads say, just see them till probux tells you that you have been credited of the certain amount of money, more information you will find on your own, these were all the basic things you need to know.
(Btw, I really love CoD1
I love ponies!! xD