>When starting an application from a network drive using an icon on the Windows
>taskbar, this does not work if the drive on which the application.exe is
>positioned is not indicated with a drive letter. For instance, if the app is found under \\RHBCML\ntprogs\appname we have a file access denied problem. If however we use H:\appname it works. I really need to use the \\rhbcml.... format to eliminate drive letter allocation problems. Can it be done!

What network operating system are you using? Only NT/2000/9X or do you have Novell in the mix? If Novell is present, you may have to configure in what order the clients process requests. the Client for Microsft Networks should be first to handle UNC requests. Novell clients don't know how to do this.