How to close up the space between menu and full screen sidebar

I want to close up the space between the menu and the fullscreen sidebar, increase my site width that is making it larger i also want the primary and secondary sidebers to the by the right hand side with the primary sidebar bigger than the secondary sidebar ie having (CONTENT-SECONDARY SIDEBAR-PRIMARY SIDEBAR) This is the link to the frontpage where i want to effect these changes http://www.nblitz.com will appreciate your help