>as I can look for a file that is in my hard disk? I don't know the subdirectorio level in which is

Hi Francisco,

You can have look at XDIR download#25487

Among other things, there is also search file function implemented
that creates cursor with all files found along given path or disc drive.

set procedure to ....\xdir.prg additive

nFiles = FileSearch( 'NotePad.exe' , 'C:\' )
                    * Search File ,  Path       
if nFiles > 0 
  browse normal
endif          
                

Example given here will search your entire C: drive looking for notepad program and store results in cursor.