WordPress Help Required (Urgent Please)

Hi there,

My Word Press Blog url is http://www.skincarequeries.com/

1. I want to know that how to make the Hierarchy of the left side categories like this.

http://www.iseeq.com/c/debt-management.htm

2. How to put the Newsletter Widget at the desired place?

3. How to replace the main image at the home page?

4. How to make the right menu items aligned http://www.skincarequeries.com/?page_id=27

Any help will be highly appreciated.

Regards
bushib