Bought a wordpress theme - need help customising it.

Hi, we need help customising a wordpress site we bought a theme called "compare". The site is topdongxi.com. We want to get it looking similar to the demo site but in Chinese. We just need a few things customised. Like the images currently aren't displaying on the categories. We would like to get the brand page displaying all letters of the alphabet (click one of the navigation pages and you will understand).

thanks