Creating Custom Controls in a dialog control

hi all;

I'm using vs2005 for my mfc application;

i just trying to add my own custom control in place of custom control space provided in dialog box; i want to add  a couple of ownerdraw buttons, edit boxes, listboxes in my new CcustomCtrl class.; what should be the base class for CcustomCtrl.?? i'm in confusion that whether i should i use CWnd or CDialog. and what are the points to be consider while designing my new class CcustomCtrl.