Affiliate Software Solution Advice

Have little knowledge of affiliate solutions. Have two websites that I wish to link with affiliate software. I would like to send traffic from one to the other and to track the clients who go through and purchase a product on the second website. I don't have credit card facilities so I gather there is a way to track through PayPal? Other payment options I offer are bank transfer, Moneybookers and NETeller. I am looking for someone to suggest all possibe options. What is the easiest way to do this? I am only interested in a solution to track the traffic and sales between the two websites only.