Modify new website os template

I have a website domain sextoyseurope.com. I bought a template for it and I wanted to add products from [login to view URL] and put this site on my Paypal's Website Payments Pro account for shoppers. The guy who worked on another site of mine said "I tried my best to get products of myfreewebsite on [login to view URL] but could not. The template uses the oscommerce shopping cart and I am not experienced in modifying the oscommerce templates. Someone experienced in oscommerce can help you to set up the "Video on demand" linking and other product adition". So I am looking for someone to finish off this template so I can get customers. See [login to view URL] for another website I use except this one does not use a shopping cart.