the auctiva store will automatically put links to each of your ebay items on its page (like the store window does).
If it helps with explanation, here's my auctiva store http://www.auctiva.com/stores/viewstoreitems2.aspx?id=21087
BTW, when you look at it, if you see the first one on there and notice it has PHP 4,267.00 for price and are wondering "what the????" it's because I was experimenting with ebay's intl sites