2
Hey, I'm no pro, but there's probably two ways you could do it.
1) Go into the admin area of your XOOPS installation, go to Blocks, and choose "Visible -- No" for all the extra stuff. That should make them disappear.
2) Edit the theme.html file to ignore left blocks and right blocks. Not sure what that will do, it might blow up, but it's worth a shot.
Good luck!