Easiest way to install: Download Devsuite-pro from
http://rjpcomputing.wordpress.com/programming/bcx/devsuite-pro/
then update the help file using the download from
http://tech.groups.yahoo.com/group/BCX/files/BCX_Help_Files/

Some resource notes:
http://www.codeproject.com/KB/wtl/CToolTipDialog.aspx

With an updated version here :
http://tech.groups.yahoo.com/group/wtl/files/atlTT.h

#include “atlTT.h” // or #include “ToolTipDialog.h”
class CMyDialog : public CDialogImpl, public
CToolTipDialog
CHAIN_MSG_MAP(CToolTipDialog)
and a string resource with your button ID.