I figured out to create a custom attribute and tie a file to a custom attribute.    

However the problem that I am now having is how to get the viewtemplate.ascx file (or a custom one) to load just the files that are tied to that custom attribute.

For example, I have a Client that is going to be using the system.   I need to say that a file is for a specific Client (ClientID is the custom attribute, and the value for the client is assigned via a custom control that contains a dropdown list of Clients.)    I then need to limit the files that are showing up to the files that are specific to that client.

I see in the forums that other people have done a similar thing and based on the information in the forums, I was able to complete the first part, but have not been able to locate any information on the second part.

Any help would be appreciated.

Chris