VBA code-file name replace dash with space

Here's how I would do that:

Option Explicit

Sub RenameFiles()
Dim fName
Dim fPath:  fPath = "C:\Documents and Settings\Desktop\pictures\"

fName = Dir(fPath & "???-???-???-???-???-???-???.jpg")

Do While Len(fName) > 0
    Name fPath & fName As _
        fPath & Application.WorksheetFunction.Substitute(fName, "-", " ", 4)
    fName = Dir
Loop

End Sub