How do I merge events - not just combining pictures into one event?

Question

I have a iPhoto 09 and haven't upgraded yet. I have a bunch of events and it's hard to get through all of them. Can I combine the events while retaining the seperate events? Sort of an event within an event; not adding all the pictures from one event into anoher event and losing the deliniation.
Or, can I archive them somewhere so they don't appear in my Event list?

Answer 1

Can I combine the events while retaining the seperate events?
No. If you merger events you'll end up with just one event representing those that you merged. 
To make selected events invisible in the Events mode do the following:
1 - select the events and double click on one of them to open all in the same window.
2 - type Command+A to select all photos.
3 - right or Control-click on any of the selected photos.
4 - click on Hide in the window that comes up:
That will hid those events from the list of other events in the Events mode and wherever else those photos are, i.e. albums, books, etc.
To makes the Events visible again use the View ➙ Hidden Photos menu option:
To make them permanently viewable you'll need to select those events and follow steps 1-4 above but click on the Show button this time.
OT