Hyperlink via virtual directory to web application?

I'm hoping that someone might have an idea how to go about this.

I have a report built in SQL Server 2008 R2 Reporting Services and am trying to link to the report via a pop up in the Flex Viewer application. I understand that when I hyperlink to files via the Flex Viewer application, I need to use a Virtual Directory which points to the physical location of the file. The problem is that the 2008 R2 Reporting Services don't have a physical location that I can direct a virtual directory.

I have the hyperlink setup correctly in my popup, if I copy and paste it from the pop up window into a web browser, the report will open. If I click the hyperlink directly in the popup, the web address will open, but a few extra characters get thrown into the address, erroring it out. It makes me think that setting up virtual directory to the location would fix things.

To review, I'm trying to create a Virtual Directory to a web application that doesn't physically exist. ie. I'm trying to link to "http://servername/ReportServer/Pages/ReportViewer.aspx?%2fEnvironmental%2fPoint+Search&rs:Command=Render&SiteID=point-30" vs. C:\ReportServer\Pages\ReportViewer . . . .

Does anyone know how to create a Virtual Directory to a web application?

Thank,
Matt