Stripping Files out of Dirs

Hey,
I am looking to create a program/script that will go through 1 directory and look for the file extension .jpg . Now, this directory will have subdirectories and I need the program to be able to read and parse through those as well.
I tried something in VBscript, but would like to do the same in C++

Code:

Option Explicit
on error resume next
Dim FileSystemObj
Dim FolderPath
Dim folder
Dim FileList
Dim File
Dim DaysOld

'set how far back to delete
DaysOld = 30
Set FileSystemObj = CreateObject("Scripting.FileSystemObject")

'set the directory
FolderPath = "C:\ImageDir"
set folder = FileSystemObj.GetFolder(FolderPath)
set FileList = folder.Files

'test each file's age and delte if older than DaysOld
For each File in FileList
If File.DateLastModified < (Date() - DaysOld) Then
File.Delete(True)
End If
Next

'______________________________________________________

'Tidy up
Set FileSystemObj = Nothing
Set folder = Nothing
Set FileList = Nothing
Set File = Nothing

This code also deletes the files if they are 30 days old. I need it to be able to do that. However, this script does not go through subdirectories. I kind of pieced this code together from other VB sites and help from others.

Any help would be greatly appreciated.
Thanks.

There are several examples of how to walk the directory tree in the FAQ.