Part four continued;
Click g, and move the modified cube to the base of the saber, like in pic 1. Now click on View again, and select Top (or you can click 7 if you have a numberpad.) Click shift-d, and move the new cube to the position in pic 2. Click r, then type 90. This rotates the cube 90 degrees clockwise, positioning it perfectly. Click shift-d again, and move it to the opposite side of the first cube. Repeat the rotating process, then do the whole thing once more on the final side. You should have something like in pic 3.
Now the handle of our lightsaber is done! Nearly... We need to add a good material to it, to make it have that lightsaber shine. Stretch the panel at the right hand of the screen out a bit, to give you a better view, then click materials (pic 4). Click New. I know, it all looks a bit daunting, but it's quite simple. click on the first white color tab, under Diffuse, and turn it down to a light grey. Scroll down to an entry called Mirror, and check the box next to it. Expand the entry, revealing the mirror settings. Set Reflectivity to 0.396 as in pic 5. Don't worry that you can't see it reflect now, that'll come in the final render.
Congrats, You've just made your first Lego lightsaber hilt! Next creation explains how to make the iconic blade in any color you want!