Private Declare Function SetFileAttributes Lib "kernel32" Alias _
    "SetFileAttributesA" (ByVal lpFileName As String, ByVal dwFileAttributes As _
    Long) As Long

' Associate an icon to a folder, by creating a desktop.ini file into it.
' Within Explorer the specified icon will be displayed instead of the standard 
' folder icon
' Parameters:
'   sFolderPath: path of the folder to associate the icon to
'   sIconFile: icon file to associate. This can be a .ico, .exe or .dll file
'   iIconIndex: index of the icon in case the specified file contains more than 
' one icon (such as shell32.dll)
'
' Example:
'   SetFolderIcon "C:\NiceFolder", "C:\Documents\TestIcon.ico"

Sub SetFolderIcon(ByVal sFolderPath As String, ByVal sIconFile As String, _
    Optional ByVal iIconIndex As Long = 0)
    Dim sContent As String
    Dim sDesktopFile As String
    Dim bExists As Boolean
    Dim handle As Integer
    
    On Error Resume Next
    ' test whether both the folder and the icon file exist
    bExists = (GetAttr(sFolderPath) And vbDirectory) <> 0 And (GetAttr _
        (sIconFile) And vbDirectory) = 0
    If bExists = False Or Err.Number <> 0 Then Exit Sub
    
    ' build the file content
    sContent = "[.ShellClassInfo]" & vbCrLf & "IconIndex=" & iIconIndex & _
        vbCrLf & "IconFile=" & sIconFile
    
    'make the path for the desktop.ini file
    sDesktopFile = sFolderPath & IIf(Right$(sFolderPath, 1) = "\", "", _
        "\") & "desktop.ini"
    
    ' open the file and write the content
    handle = FreeFile
    Open sDesktopFile For Output As #handle
    Print #handle, sContent;
    Close #handle
    
    ' make the file hidden and the folder read only
    SetFileAttributes sDesktopFile, vbHidden
    SetFileAttributes sFolderPath, vbReadOnly
    
End Sub