Lightwave Layout - Dopesheet
Newtek has a movie on their FTP site which explains much of the workings of the dope sheet: Dopesheet Movie (Quicktime, 20Mb)
Scene Editor
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As you noticed, moving Key Frames in time is a pain in the behind in the Graph Editor. So let's turn to the Dopesheet, an essential way to display keyframes in any animation package
The Dope Sheet is part of the Scene Editor. You can open an new instance of that editor from any tab by selecting Scene Editor > Open (CTRL-F1).The Dope Sheet is located in the top-left portion of the scene editor, if the Property tab is active, click on the Doppe Sheet tab
You might not see all frames. Drag the scroll bar handles or resize the window to adjust the view