Controling Dimming in Animation

[robbbo]

Version: 2008 Operating System: Mac OS X 10.5 (Leopard) Processor: Intel I have a list on a slide that I have main lines and then indented lines. Such as below

- Main Line 1 Text
- Main Line 2 Text
- Main Line 3 Text
- Main Line 4 Text
   - Indent Text 1
   - Indent Text 2
   - Indent Text 3
   - Indent Text 4
- Main Line 5 Text

What I want to have happen is to have the each line dim when the next line comes up except for the Main Line 4 Text to dim only after all each Indent Text item is shown then Main Line 4 Text dim when Main Line 5 Text is displayed.

I am sure this is quite simple but I cannot seem to find a clean solution. Any Ideas are welcome!