Ok!
It would probably easiest if you bought one pre-made and installed on your behalf (digitalracks. com /company/content/websites/Viewsite.aspx?name=advstore).
eBay is a good method to attract customers and visitors.
Ensure your auction templates are well designed, and informormative and descriptive - including links to your website to draw traffic.
Also, you should be aware of SEO techniques, and promotion techniques (articles may help: arcon5. com /gt/index.php?option=com_content&task=category§ionid=5&id=21&Itemid=36).
Remember, there are 2 fundamental factors of being successful - time and effort.
You need clear objectives, aims, and goals!