>Tore, I am already putting the backslash in my example above. This is not the issue I think. It has something to do with the double forward slashes and the single forward slash between the "adobe" folder and the file name.
>
>Asking for sys(5) + sys(2003) converts backslashes to double forward slashes. And the drive letter is converted to "file:" . Looks like UNC or something but I am not sure what I need to change in order for the path to the file to be correct for IE.

Actually, "file:" is the protocol (instead of http: or ftp: or smb: or whatever:). If you're on an UNC, sys(5) gives you the \\server\path (which acts as your drive), and sys(2003) gives you the \path (note the initial backslash).

Could you just try something like this:

lcFile=fullpath("adobe\"+pdffilename)

IOW, let Fox convert the pieces into a real path, and then submit that to IE. Works with UNCs, just tried.