need help --fix the

[sellbuydomain]

hi all,
i am looking some help on my home page, please check www.talknames.com
i try to add a left column box, i used one of the leftcolumn hack, after i add the code, the table the right is not fit the background size, which i set 800 pixels
i change the background in the admincp, styleVar , how do i fix the home page table to fit the background size? any help? thanks