Showing thumnails and sizes in the cart

Hello,

During my testing, a few issues I'm trying to resolve:

1. When I add something to cart, for example from this page: prints.php I am redirected to my shopping cart, and there I see the words "EditRegion3" under the Continue Shopping, Clear Cart, Update, etc links.

This page was created from a DW template, but how do i prevent the words EditRegion3 from displaying on the page?

2. How do I get the thumbnail images to appear? The cart is static, and the thumbnail images are in a folder entitled store_images . If I go to prints.php and add to cart the first poster labeled Planet Sushi, why doesn't the thumbnail pic show up in the cart? It just says Product Thumbnail. I actually only have one thumbnail pic in the store_images folder, for the Planet Sushi poster. But it doesn't show up.

3. I am using USPS to calculate shipping. Does that mean when putting in the weight in an Add to Cart object binding, do I just put the weight of the actual item, or should I weigh the object with the packaging I'll use to mail it, and put that total in the weight column? Or does USPS calculate the weight?

4. Why don't the size option selected by a customer items display in the cart? For example, on this page: hats.php if i choose a hat, select a size option, shouldn't the size option appear on the cart page along with the price? That way a customer could choose one Small hat, and one Large hat of the same style and I'd be able to know what to send.

Okay, that's all for now. Thank you.
CHris