I need an online store

I need to have an online store for my resale business. I will need a cover page, about us page and several pages where i can display my products. i need to be able to click on the product picture and get a popup page the tells all about the product. I then need an "add to Cart" I also need a shoping cart that i can add my credit card handler information into to accept payments. This project must be easy for me to change products because most of the time i only have one of each item. when it is sold i need to remove it and add a new product. I plan to have between 100 and 200 products at all times.