That's like asking Ford to continue to provide parts for the Edsel or Chevrolet for the Corvair.
What system and iWeb version are you using? iWeb 2 (08) is not compatible with Mt. Lion. iWeb 3 is. Others who have had that problem did find fixes.
As Roddy pointed out you could learn how to use iWeb and it's menus?
It's really not that hard.