Putting a dbgrid and four bitbtns in one component

Hi everybody!
I want to put a dbgrid and four BitBtns in a component, but I dont want
to put them in a frame because I want to encapsulte it better.
I know that I should creat a new package but I don't know what to do
then.
Maybe I should inherit the package class from TFrame and put dbgrid and
BitBtns on it, but  when I want to put that component in a form, delphi

sends a message that It doesn't find components resource.
What should I do?

The source is here:


unit UnitGridset;

interface

uses
  SysUtils, Classes, Controls, Grids, DBGrids, UnitTScrollDBGrid,
Buttons, Forms;

type
  TGridSet = class(TCustomFrame)
  private
    { Private declarations }
    DBGrid:TScrollDbgrid;
    BitBtnNext:TBitbtn;
    BitBtnPrior:TBitbtn;
    BitBtnFirst:TBitbtn;
    BitBtnLast:TBitbtn;
  protected
    { Protected declarations }
    constructor Create(AOwner:TComponent);override;
    destructor Destroy;
  public
    { Public declarations }
  published
    { Published declarations }
    property width;
    property Height;
  end;

procedure Register;

implementation

procedure Register;
begin
  RegisterComponents('Samples', [TGridSet]);
end;

{ TScrollDBGrid1 }

constructor TGridSet.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
Parent:=(AOwner as TWinControl);
DBGrid:=TScrollDBGrid.Create(self);
DBGrid.Parent:=Self;
DBGrid.Top:=0;
DBGrid.Left:=0;
inherited Height:=320;
inherited width:=200;

DBGrid.Height:=inherited Height-35;
DBGrid.Width:=inherited Width;

  BitBtnNext:=TBitBtn.Create(AOwner);
  BitBtnPrior:=TBitBtn.Create(AOwner);
  BitBtnFirst:=TBitBtn.Create(AOwner);
  BitBtnLast:=TBitBtn.Create(AOwner);

  BitBtnNext.Parent:=Self;
  BitBtnPrior.Parent:=Self;
  BitBtnFirst.Parent:=Self;
  BitBtnLast.Parent:=Self;

  BitBtnNext.Width:=30;
  BitBtnPrior.Width:=30;
  BitBtnFirst.Width:=30;
  BitBtnLast.Width:=30;

  BitBtnNext.Height:=30;
  BitBtnPrior.Height:=30;
  BitBtnFirst.Height:=30;
  BitBtnLast.Height:=30;

  BitBtnNext.Top:=inherited Top + inherited Height +10;
  BitBtnPrior.Top:=inherited Top + inherited Height +10;
  BitBtnFirst.Top:=inherited Top + inherited Height +10;
  BitBtnLast.Top:=inherited Top + inherited Height +10;

  BitBtnNext.Left:=inherited left + 10;
  BitBtnPrior.Left:=inherited left + 45;
  BitBtnFirst.Left:=inherited left + 80;
  BitBtnLast.Left:=inherited left + 115;


  BitBtnNext.BringToFront;
  BitBtnPrior.BringToFront;
  BitBtnFirst.BringToFront;
  BitBtnLast.BringToFront;
end;

destructor TGridSet.Destroy;
begin
  DBGrid.Destroy;
  BitBtnNext.Destroy;
  BitBtnPrior.Destroy;
  BitBtnFirst.Destroy;
  BitBtnLast.Destroy;
  inherited ;
end;

end.


Thanks a lot for your help. 
Hafez Rabbani