Os Commerce Site Fix

1. When going to the checkout, the tax doesn't get added to the subtotal? There is no tax rate showing on the front panel. 2. When a customer wants to log off of the account, there are two places to click an inch apart. 3. The "post code" appears in the address book between the city and the state. It should be after the state. 4. The "next" and "previouis" buttons on the product detail page are showing images randomly. The images should be shown in alphabetical order when I click "next". 5. In the product attribues, when I put 1 for "option name" and 0 for "option value", it adds $1 in the front end where as it shouldn't add anything because I specified 0 in the option value. 6. After you log into my account, there are two links to logout. I need one of the links deleted. 7. I try to specify which address is shipping and which is billing. It was working yesterday. But it won't show anything now. See screenshot. I clicked on "edit" to specify the shipping and it is not working at all. And because of that tax won't show. Seen attached screenshot.