Wouldn’t it be nice if when you were setting up a Smart Album in iPhoto ’06 that you could simply say:
[Date] [is the month of] [January] 
[Date] [is in the range] [10/01/2007] to [10/31/2007]
I mean, we do* have iCal on every Mac, right?
The majority of my iPhoto library is arranged according to month and that would save me alot of extra clicks.