Really, it's very simple to find.
Login to your LSWS Admin page.
Go, using the top menu:
Configuration > Virtual Hosts.
A list of the current Virtual Hosts you have configured on your system comes up.
Find the name of the virtual host (eg Example.com) you want to configure the custom 404 for, then click the 'View/Edit' link on the right hand side of the virtual host's name.
Then you will see a page called 'Virtual Hosts - Example.com' that has about 11 horizontal tabs on it like so:
Basic - General - Log - Security - etc etc
Select the 'General' tab.
There you will then see a section that says: "Customized Error Pages".
Click the 'Add' link to create your own customized error pages (404, 403 etc).
You will need to repeat this procedure for each virtual host.
Last edited by brrr; 05-06-2009 at 10:41 AM..