Adding products to Joomla Site/Shopsite

I have a Joomla website up and running. I have products for sale on my Joomla website. When a shopper chooses to "buy now" the site switches over to my Shopsite Pro website. The item is then in the cart and ready to be checked out in The Shopsite Pro. Both sites are up and running now. Your job would be to work on 3 items. Two are loaded in the Joomla website now, just not correctly linked to the shopsite website. When the buyer clicks on the pic to "buy now" it does not show up in the cart on the Shopsite website, like the ones currently there now. You would fix those two items and add a third. This job is for that work outlined above. I'd like to hire someone who can complete this job quickly. My next job I will post; I also would like to know if there is an easy way to add a photo gallery to the shopsite website? I would like to be able to upload pics in a photo gallery and have it show up as a thumbnail in a gallery where when someone clicks on the pic it will expand into a larger pic. I would like to add a small description to each pic. If you feel you can find a way to do this second job, please let me know.