(MENU OPTION CLICK IN FORM1)
void __fastcall TForm1::Over1Click(TObject *Sender)
{
	Form2->ShowModal();
}

(CODE OF FORM2)
//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "AboutBox.h"

//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm2 *Form2;

//---------------------------------------------------------------------------
__fastcall TForm2::TForm2(TComponent* Owner)
	: TForm(Owner)
{
}