>Thanks for the reply, which prompts another question:
>
>Supposing (for one reason or another) that they have installed Windows into C:\WIN95\SYSTEM. Given that we have no control over where the setup wizard puts the ESL file, is there anything that I can do about this situation? Is there perhaps a registry or .ini setting that can be tweaked? I don't want to have to start packaging differently depending on each client's desktop environment, as the application is supposed to be basically 'shrink wrapped'.
>

Setup Wizard (or any other competent installer) will check the OS by a standard API call to determine the locations of the Windows and System directories; there's a FAQ entry here showing how to get them through VFP. People who insist on not using a competent install tool, especially ones that do blind copies of files into what they think might be system directories will fail. Period.

FWIW, the blind copy mechanism is guarenteed to fail under Win2K even if you guess the folder name right - unprivileged installs can't write directly to a system directory IAC. Looks like you'll have to do things right rather than playing "Pin the tail on the system directory".