Hi. We are attempting installing SP2 OWA extensions on our front-end and back-end Servers. The Servers are running Exchange 2003 SP2 on Windows 2003 SP1. If the patch is exploded to its default folders, we get "the parameter is incorrect" when running setup.exe. If we change the name of any of the folders we get an NTVDM error. Does anyone know how to get around this?