Hiding completed To Dos in Mail 3.0?

[superspiffy]

This is an Apple Mail 3.0 question. How do you hide the To Dos that have already been completed? I don't want a long list of completed To Dos popping up when clicking on the Reminders branch.

 

[samh004]

Have you tried deleting them ?

 

[superspiffy]

If I wanted to delete them then why would I be asking how to hide them? I still want to save them. iCal lets you hide the completed ones and unhide them incase you want to go back to it.