how to set up payment by credit card

Hi All

I am new to opencart and would like to try setting up the credit card payment.
Is there any documentation/tutorial on this?

I tried on my site to buy something and with the default setting. I am linked to either cash payment or paypal.
I am dummy to this paypal thing. When I pay by credit card, I do not have to log into paypal right? If need to, does it mean all my future customer has to create paypal account?
I hope customer can just simply pay by credit card.

Then for the credit card or paypal payment, what should I alter in the php in order to let payment go into my account(my paypal account or ..)?

Kindly advise. Maybe my questions sound broad. Kindly help as I am new

Thanks

Jason

It's quite easy:
First get the updated paypal module here
Then follow the steps posted on this site:
http://www.eventbrite.com/t/PayPal-optional-setting

Thanks Qphoria. You always support very fast!
I am checking your post and that link. First look, I think very comprehensive. Shall write back if still in doubt