Hi,
In Explorer see if the install directory is readonly, if so change it and all subdirectories.

>>>> When you installed the app did you specify "Make available for all users" ?
>>>
>>>How is this done? I cannot find that option anywhere during the installation process, or the properties of the installed program.
>
>>Look for 'ALLUSERS' at http://fox.wikis.com/wc.dll?>Wiki~InstallShieldExpressAndVfp7
>
>Ok, I uninstalled the application and ran the setup program from the command line with the /V"ALLUSERS=2"
>
>Now I get the message "The resource file in invalid. Overwrite it with an empty one?", to which I replied yes. Then I get a message "Cursor cannot be updated". I checked the folder and it is listed as "Read Only". I cannot reset the read only property when logged in as a limited user, and changing it when logged in as administrator does not change it for limited users.
>
>What next? Is there anything I can do with Installshield to make XP installation easier? This seems so much more difficult than Win2K.