Sub ArrangeWindows()
Dim wb As Workbook
For Each wb In Application.Workbooks
Windows(wb.Name).WindowState = xlNormal
Next
'books to minimize
Windows("Book1.xls").WindowState = xlMinimized
Windows("Book2.xls").WindowState = xlMinimized
Windows("Book3.xls").WindowState = xlMinimized
Application.Windows.Arrange (xlArrangeStyleHorizontal)
End Sub