wp simple paypal shopping cart and nextgen gallery integration

Please help me!! I use the nextgen gallery plugin on my website and am starting to put the shopping cart on my website now too – i have downloaded the files that the tips and hints page told me to download, which should allow me to integrate the shopping cart and gallery and allow me to put an ‘add to cart’ button beside each photo – but it tells me to upload the link to the ‘view’ section of the nextgen gallery plugin – there is no such section! please help i was trying to get this to work for 10 hours yesterday! thanks 🙂