What do you mean by "import it into ShopSite"?
There are a couple of ways to use pages created in other applications with ShopSite. The first would be to use the Order Anywhere links, which are links for Add to Cart and View Cart buttons, and place them on your pages so that they are displayed by each product on your page. See
http://shopsite.com/help/9.0/en-US/sc/p ... where.html
for more on using this feature.
The second method would involve converting your Frontpage layout into a ShopSite custom template. This is a more involved but would give you the greatest flexibility in the long run. You can find information on Custom templates in the ShopSite on line help at
http://shopsite.com/help/9.0/en-US/sc/p ... lates.html.
Note that the help links I posted are for ShopSite version 9.0 and for a Pro level store. If you have a previous version or Manager or Starter you would need to refer to the help for that specific version. You can get to the help by clicking on the red ? icon on any screen in the back office of the store.