To withdraw affiliate earnings you need to have a working Paypal account.
If you don't have a Paypal account the process is very simple. You can actually receive money to an email address before creating an account and activate it afterwards, if you so desire.
Once you have created your Paypal account, you can add bank account details within Paypal and withdraw your earnings to your real life bank account.
Unfortunately, some countries do not allow their citizens to create Paypal accounts. We have no provision for other methods of payment at present but users are still encouraged to use the affiliate system and use their earnings to pay for VIP membership.