Remove 'column_right' from homepage, but NOT category pages

[ddaanniieelluk]

I want to remove the side bar from the main 'http://www.bytebox.co.uk/demo/index.php' page, but allow it to be shown on the category pages such as 'http://bytebox.co.uk/demo/index.php?cPath=1'

 

Any ideas?

 

Thnks :D