Is cb_pages_security derived from Page object?

>All,
>
>I have been tasked with putting a .Net application under a project in VS.Net. The ASPX and codebehind files are located in separate directories and the ASPX files are pathed to the CB file as follows:
>
>

>< % ERROR: @ Page Inherits="cb_pages_security" src="/fchs/earlytrack/codebehind/admin/pages_security.vb" LANGUAGE="VB"  % >
>

>
>The error I get is:
>
>

>The file failed to load in the Web Form designer.  Please correct the following error, then load it again: Visual Studio cannot open a designer for the file because the class within it does not inherit from a class that can be visually designed.
>

>
>How can I fix this problem?
>
>TIA
>
>Rex