private const string OUTDIR = @"c:\temp\WinShop\";

		public void GeraFacturaWord( /* acrescentar parametros que entenderem necessários */ )
		{
			object missingValue = Type.Missing; 
			object uchar = Word.WdUnits.wdCharacter;
			object i1 = 1;

			// dados da factura
			// TO DO ir buscar estes dados ao DataSet com a venda
			int nFactura = 1023;
			DateTime dataFactura = System.DateTime.Now;

			// gerar nome de ficheiro
			object filename = OUTDIR + "Factura-" + nFactura.ToString() + ".doc";

			// criar objecto Word
			Word.Application w = new Word.ApplicationClass();

			// criar novo documento
			w.Documents.Add(ref missingValue, ref missingValue, ref missingValue, ref missingValue);

			//w.Visible = true;	// só para teste/"debug"!!!!!

			// cabeçalho da factura
			w.Selection.TypeText("Factura nº ");
			w.Selection.TypeText(nFactura.ToString());
			w.Selection.TypeParagraph();
			w.Selection.TypeText("Data : ");
			w.Selection.TypeText(dataFactura.ToLongDateString());
			w.Selection.TypeParagraph();
			w.Selection.TypeParagraph();

			//
			// criar tabela (cabeçalho)
			//
			object tb = Word.WdDefaultTableBehavior.wdWord9TableBehavior;
			object afb = Word.WdAutoFitBehavior.wdAutoFitFixed;
			w.ActiveDocument.Tables.Add(w.Selection.Range, 1, 4, ref tb, ref afb);
			
			w.Selection.TypeText("Quantidade");
			w.Selection.MoveRight(ref uchar, ref i1, ref missingValue);
			w.Selection.TypeText("Designação");
			w.Selection.MoveRight(ref uchar, ref i1, ref missingValue);
			w.Selection.TypeText("P.U:");
			w.Selection.MoveRight(ref uchar, ref i1, ref missingValue);
			w.Selection.TypeText("sub-total");


			// TO DO adicionar as linhas de factura

			// TO DO formatar tabela

			// TO DO rodapé da factura

			// TO DO gravar ficheiro


			//terminar Word
			w.Quit(ref missingValue, ref missingValue, ref missingValue);
		}