BGARLOCK1  Exactly what I was looking for: Simple, light weight, integrates with iCal, and low cost. I use a web based billing application named cInvoice, and this is what I needed to calculate my billable hours from iCal for my Consulting calendar.  
(Version 1.7.1)

BGARLOCK1  To the person about the Toolbar comment: I chose the "Wood" toolbar style, and the toolbar is much more "viewable" The default is the "plastic" style. I also chose to have the toolbar display both icons and text.

I have been a Notebook user since switching to the Mac, and could not live without it. One option I really wish it had, was a on-line sync, and web based access. Evernote does this, and if there was a way to combine both Evernote and Notebook, this would be the killer app that is a must have for almost everyone.

I have to use both Evernote, and Notebook, but really would love to see a product based on the marriage of both applications.

Still, Notebook is a 5-star application.  
(Version 3.0v334)