If you want to add a note, use the Ctrl+Enter shortcut key to focus the notes box.
The Start date can be set similarly with Shift+Ctrl+D.
(Be sure and look at the help file)
Download Tudumo from tudumo.com
Keyboard Ninja: Manage Your GTD Tasks With Tudumo
As a Keyboard Ninja, I've always been very dissatisfied with the choices for todo lists, since none of them cater to the hotkey enthusiast... until I stumbled across Tudumo, a great little Windows application that follows David Allen's GTD methodology.
