Great guide on how to get a virtual file share working in IIS with sharepoint. a little bit more difficult than a conventional web page to get up and running.
http://blogs.msdn.com/sgoodyear/archive/2007/05/07/custom-web-applications-coexisting-with-sharepoint-2007.aspx
http://blogs.msdn.com/sgoodyear/archive/2007/05/07/custom-web-applications-coexisting-with-sharepoint-2007.aspx