+1 on RocketDock. It it so much less invasive and memory usage is next to null. Not to mention it is stable as hell.. I would say its far better/more customizable than OSX dock. (as well as objectdock)
I do have to add though that a weather docklet does not come with rocketdock like it does with objectdock but pulling the weather docklet out of the objectdock installer is easy and to install is easy as well. since you are running vista there are weather gadgets so it might be a moot point.
Ep, glad to see you come back and tidy up...did want to ask a one day favor, I want to enhance my resume , was hoping you could make me administrator for a day, if so, take me right off since I won't be here to do anything, and don't know the slightest about the board, but it would be nice putting "served administrator osnn", if can do, THANKS