I need a Shopping Cart Hook up to a Classifieds Program of mine

I Bought an ads posting program and I know that its probly on the cheaply side of websites. This website has a place where you can post ads in highlighted areas and pay a little fee. The payment it takes is only Paypal. This website is called www.adsalasks.com. I own another website called [login to view URL] and I designed this website with FrontPage I sell a product on there and use a shopping cart that allows me to except all payments, Visa, Master Card, American Express, Google check out and paypal. So what I am trying to do is except all Payment On [login to view URL] and am trying to interrogate the shopping cart that I use on [login to view URL] onto [login to view URL] if possible. The shopping cart is from a company called: [login to view URL] [login to view URL] is from a company called: [login to view URL] Thanks Rob C.