Programming Subscription Options

Hello,
We are developing our own ASP.NET 2.0 (C#) front-end for Reporting Services. We are trying to create an interface for setting up standard subscriptions that is similar to Report Manager.

On Report Manager's Report Server File Share options page, there are two options Render Format and Overwrite options that we need help with. Can we query the ReportServer and get the available Render Formats to populate a dropdownlist? Or, do we have to hard-code the values?

Same for the Overwrite options, are these hard-coded? Or, can the valid values be retreived from ReportServer?

Finally, on the Report Server E-mail setup page, there is a Priority field that we need to replicate. Again, are the valid values hard-coded into the dropdownlist or retreived from the ReportServer?

Thanks.I answered this in the newsgroup but will post my answer here as well.

You can call GetExtensionSettings to get the settings that a delivery
extension accepts. The extensions will return a populated list of renders
that it supports as well as the full set of options that it supports.