e-store advice?

a small company is talking about picking me up as their new webmaster, and they're looking to do an e-store.

they have something set up now through an outsourced site, but are looking to set up one of their own and I don't have a lot of experience with setting up an e-store. I was wondering if anyone could point me to some good resources... I've taken a course on ASP so I know a little bit about what i'm supposed to do but i really need some good direction.

Any advice is welcome!