Enhance web site graphics - www.accesstochina.com

My company web site http://www.accesstochina.com has diagrams and buttons. Most of these where created in Paint shop and are of low quality.

I need to have the following buttons and diagrams reworked.

http://accesstochina.com/home/ - Set of 9 Buttons plus two new buttons
http://accesstochina.com/be-seen-in-china/ - One diagram
http://accesstochina.com/services/ - One diagram (top of the page – very poor), Set of diagrams
http://accesstochina.com/infor/chinese-internet/ - two set of 3 diagrams
http://accesstochina.com/B2B66/ - one diagram

The new diagrams need to created in Jpg and PNG format (with transparent version) in current and large size.

In addition once complete they will need reproducing with Chinese words