Do you want make online shop but you don't want spend many many your time ? You can make the online shop using joomla CMS (Content Management System) with virtuemart component. But you must have understand with Joomla first. And for efective work, I recomend using VirtueMart eCommerce Bundle (w. Joomla! 1.5.14) that you can download from virtuemart website. It's the simple way to build you dinamic website (online shop) fast.