tomasz, this is very strange , I was looking at Miva`s webite this morning and I almost decided to buy the software , thanks for your advice , you saved me a lot of troubles and time
I would look into using wordpress with the shopp pligin as an ecommerce site. There are two benefits to this approach. One being, the fact the google and other search engines LOVE wordpress and thoe other being that you could incorporate a blog into your store.
You could notify customers about changes, give helpful tips, and offer discounts as blog posts. This creates ongoing content rather than a static website thats updated every so often.
If you need any help with wordpress, let me know.