You can store and use UNC path. See Re: GETFILE() Mapped Drives Message #1038591

>I'm using GetFile to locate a Picture and store its location for future processing. It may store it as "K:\MyLocation\MyPicturs"
>
>Howver, if another user has a different mapped drive, or is accessing Remote Desktop, the location may make no sense.
>
>Is there a more robust command that can be used ?