Getting A Complete List Of Files And Folders

I'm trying to get a complete list of folders within a given Folder but can only get it down to the level of the main folders sub folders but should a sub folder also contain folders it misses these.

My code below builds a list like:

c:fld1fld2fld3

This function is used to fill a combo box


Function ShowFolderList() As String
Dim fs, F, f1, S, sf, All, AF, FC, sb, sb1, sbf, sbc
Dim Lst As String
Lst = ""
Set fs = CreateObject("Scripting.FileSystemObject")
Set F = fs.GetFolder(Me![FoldersRoot] & Me![StartInFolder])
Set sf = F.SubFolders
For Each f1 In sf
Lst = Lst & f1 & ";"
Set sb = f1.SubFolders
For Each sb1 In sb
Lst = Lst & sb1 & ";"
Next
Next
'Now Remove The Last ; If Their
If Right(Lst, Len(Lst)) = ";" Then
ShowFolderList = Left(Lst, Len(Lst) - 1)
Else
ShowFolderList = Lst
End If

End Function