Code returning error 400

Hello,

I have the following code that opens a series of workbooks on a given day, however, if one of the workbooks has been renamed or is missing the code gives a "400" error and stops, is there a way of having the code retry the next workbook if it comes to an error?

Sub Auto_Open()
   Columns("P:AI").Select
    Selection.EntireColumn.Hidden = False
    ActiveWindow.SmallScroll Down:=39
    Range("B62").Select
Workbooks.Open Filename:="F:\DAILY FIGURES\DAILY FIGS 2009\" & Cells(2, 27) & "\" & Cells(3, 27) & ".xls"
 Workbooks.Open ("F:\Load List\P1 " & Cells(2, 20) & ".xls")
  Workbooks.Open ("F:\Load List\P3 " & Cells(2, 20) & ".xls")
  Workbooks.Open ("F:\Load List\RC " & Cells(2, 20) & ".xls")
  Workbooks.Open ("F:\Load List\P3 " & Cells(33, 20) & ".xls")
  Workbooks.Open ("F:\Load List\RC " & Cells(33, 20) & ".xls")
  Workbooks.Open ("F:\Load List\P1 " & Cells(33, 20) & ".xls")
  Workbooks.Open ("F:\Load List\P2 " & Cells(33, 20) & ".xls")
  Workbooks.Open ("F:\Load List\P2 " & Cells(2, 20) & ".xls")
  End Sub

Many thanks in advance reg