im having trouble with my new template ..

http://www.sygfx.5gigs.com/

what i want to do is .. i want to make the content box stretchable, but whenever i stretch it, my whole template is messed up ..

i really want to find out what i could do to make my content box stretchable, because i am gonna use the PHP navigation system and not iframes ..

I would appreciate it if u guys could edit the code to make my content box stretchable =)

If you cant, its alright, just tell me what i should do =P

Thank you,
Sheepy