uses
ComObj, Office_TLB, Word_TLB, Variants;
//...
var
Doc: WordDocument;
App: TWordApplication;
Tbl : Table;
//...
App := TWordApplication.Create(nil);
App.ConnectKind := ckRunningOrNew;
App.Connect;
App.Visible := True;
Doc := App.Documents.AddOld(EmptyParam,EmptyParam); // Doc := App.Documents.Add(fileName, EmptyParam,EmptyParam,EmptyParam);
Cols := StringGrid1.ColCount;
Rows := StringGrid1.RowCount;
Tbl := Doc.Tables.AddOld(Doc.ActiveWindow.Selection.Range, Cols, Rows);