It's different Resource file - language resource file, VFP8ENU.DLL (or language specific one).
The location of foxuser.dbf can be controlled by config.fpw only. You can create separate config.fpw for each shortcut with different foxuser.dbf using RESOURCE=< foxuser name > configuration item. You can give config.fpw different names or store each of them in the folder with foxuser.dbf it references.

>Under Tool --> Options --> FileLocations
>the entry for Resource File is c:\myDir\foxuser.dbf
>
>I have several shortcuts on my desktop which use as the Target
>"C:\Program Files\Microsoft Visual FoxPro 8\vfp8.exe" -cc:\myDir\config.fpw
>and the Start In box shows the application's home directory.
>
>I'm probably misreading the help file, but it looked to me as if adding a -L parameter to the startup command allows you to specify where the Foxuser.dbf file should be found.
>
>For one of these applications I would like to have a separate Foxuser file. So I made the target
>"C:\Program Files\Microsoft Visual FoxPro 8\vfp8.exe" -cc:\rpupko\config.fpw -lc:\myDir\play\foxuser.dbf.
>
>Now when I click on the shortcut I get an error
>
>The application or DLL c:\myDir\play\foxuser.dbf is not a valid Windows image
>
>What have I missed and how can I set up for separate Foxuser files?
>
>Thanks......Rich