>>One of the solutions could be like this:
>>oFSO = CREATEOBJECT("Scripting.FileSystemObject")
>>
>>lo= oFSO.GetFile(getfile())
>>?lo.Drive.ShareName
>
>Yuri, first thank you for your help.
>
>Can you think why when I run your simple code (above), I get empty value of .ShareName? Could it be because I choose a file from my local drive?

I do not get it: if you choose the file from the local drive, then what UNC you expect?