remove sidebar on specific page

Hello,

I managed to hide everyhting i don't need for my shop. There is only 1 page left where i am stuck.
On the following URL i want to HIDE the menu on the right.
http://vnservice.be/index.php?route=account/logout

I have been looking for hours. I hade no problem removing stuffs on other pages but this specific page is killing me.

Any help is greatly appreciated.

Check the layout for the account page in the admin under System->Design->Layouts, and remove the "Account" module.