Session Time Out; Supported?

We are using the VistaControl.  How do you set the timeout to 10 minutes?  An earlier article, for a different product, references the web.config file; is this the same file needing a change?  If so, which section do you place the code below in?  Please help.  Thanks.

<sessionState mode="InProc" timeout="10" />

Yes, that setting is correct as FileVistaControl works with the ASP.NET's session module.
You can just include that setting between <system.web> tags in the web.config of your project.