You can switch off the display of comments while you print. Recent Word versions have the option to print without comments, but I am not certain that Word 2007 had that option. If not it's easy enough to achieve with a macro.
Code:
Sub HideCommentsAndPrint()
ActiveWindow.View.ShowComments = False
Options.PrintBackground = False
ActiveDocument.PrintOut
Options.PrintBackground = True
ActiveWindow.View.ShowComments = True
End Sub