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...I'll have to give it a try tomorrow with my 430EX II as a slave, but do you know if the distance meter will work then?
I don't think it will. The User Guide goes into detail in the section on Wireless.
Also, I went from a 20D to a 7D and found as you have that controlling the flash from the camera menus is great. There can be conflicts between what's set on the flash and what's set on the camera, but if I recall correctly the camera menus over-ride the flash when the flash is on the camera.
On the original 580EX, changing from normal to Master or Slave was done with a simple lever on the bottom of the flash. With the EX II you have to use menu commands, which on the flash means holding down the [Zoom] button for several seconds to activate the settings mode and then using assorted turns of the wheel and presses of the buttons.
Using the camera menus -- on cameras than can do it -- is much easier.
...Thanks again for your help!
You're welcome; glad I could help.