we have two versions of the page both held on a IIS server seperate from sharepoint - so a 404 error in IIS isn't really an option<div><br></div><div>One page is has all the theming stripped from it and is iframed into sharepoint and the other is the 'full' version of the page and separate. </div>
<div><br></div><div>So it might mean a third page, held on the IIS server. You load that page and it redirects you to sharepoint if possible or fails over to the other version</div><div><br></div><div><div><br></div></div>