Site: http://mumukids.com/

I am new to using wordpress and trying to set up an online store. I am using a theme from elegant themes and wp ecommerce. So far I have been able to do some modifications while browsing the threads in their forum. Unfortunately the mods there are not very helpful, my plea for help was being ignored. So I come here in hope to be able to resolve my errors please.
Beginning from home page.http://mumukids.com/
1. There is an image slider which i need to make it more center so that it is in line with the price tag.
2. Same page still the logo needs to be a tad bigger and moved down maybe 1px so it is sitting on top of the secondary menu.
Products page. http://mumukids.com/products-page
3.The price tags needs to be more centered on each of the products thumbnails.
4. The products name is being hidden by the tag so that needs to move down a bit.
There is a bit of code showing which i can't find from where to delete it.
5. And lastly on that page I want to get rid of that sidebar.
Main Products page: http://mumukids.com/products-page/baby/sample-1
6. The image needs to be 267x400 in vertical mode..
7. The little arrow on the left needs to go.
8.Add to cart button needs to be closer to picture.
9.There is a bit of a sidebar on the bottom right corner, I'd like this removed plz.

This is all mainly what needs sorted. Any help much appreciated. Thank you very much.

Naz