Search Folders & Subfolders For Files By Date Modified & Move/Copy Them

I'm trying to make a macro that will search a folder and move all files from 2008 into another folder. So far it can do this, but what i need is for it to search subfolders also. At this point it moves all files from the main folder, but nothing from the subfolders.

Option Explicit
' Reference site [url]

Sub Copy_and_Rename_To_New_Folder()

Dim objFSO As FileSystemObject
Dim objFolder As Folder
Dim PathExists As Boolean
Dim objFile As File
Dim SrcFolder As String
Dim DestFolder As String
Dim x, Counter As Integer, Overwrite As String, strNewFileName As String
Dim strName As String, strMid As String, strExt As String
Dim LastModYear