Have you read Barbara Brabec`s books? She`s my muse and an icon in the crafts-for-profit world. You can view her site at www.barbarabrabec.com. I recommend getting some of her books.
Prestostore.com is an easy way to set up a site. It`s $30 a month and is REALLY, REALLY easy to use. My mom uses it for her site: www.scrapfobs.com
Shopify.com is a new service that I haven`t really looked at a whole lot. The appeal is that it doesn`t cost you anything until you sell something and then you pay them a royalty. It`s good for starting up or if you have just a few products.