AutoCAD LT 2009 introduced the Quick Access Toolbar as yet another way of putting frequently-used commands in easy reach. It's located up at the top-left corner of the screen, next to the Menu Browser, and by default it looks like this:
You get New, Open, Save, Plot, Undo, and Redo -- but what if you want to put something else up there? No problem!
Simply right-click on the Quick Access Toolbar and select "Customize." A condensed view of the CUI pops up, enabling you to browse for the command you want or search the command list for it.
Once you see the command you want, just drag-and-drop it into the Quick Access Toolbar.
If you change your mind, you'll need to go into the full CUI editor to take a command off the toolbar. Under the contents of each workspace is a node for the Quick Access Toolbar. Click on "Customize Workspace" to make changes, and on "Done" when you're finished. Notice that this means that you could have a different Quick Access Toolbar for each workspace, if there are times when you need quick access to different sets of commands.