Locations of Excel 2003 commands in Excel 2007 : Window

Excel 2003 Location	Excel 2007 Location
New Window	View | Window | New Window
Arrange	View | Window | Arrange All
Compare Side by Side with	View | Window | View Side by Side
Hide	View | Window | Hide
Unhide	View | Window | Unhide
Split	View | Window | Split
Freeze Panes	View | Window | Freeze Panes
Currently Open Workbooks	View | Window | Switch Windows

Source: Microsoft (http://www.microsoft.com/)