The first item listed is "Eclipse IDE for Java Developers (98 MB)." On the right is a green, downward-pointing arrow. Next to that are links labeled "Mac OS X 32 Bit" and "Mac OS X 64 Bit." Click on the "Mac OS X 32 Bit" link. (Even if you have nice, new 64-bit Mac, it should run the 32-bit version just fine.)
(The location next to the green, downward-pointing arrow might not be Virginia Tech, but that's OK. And the "Get It Faster Here" locations might be different, but that doesn't matter, either.) Click on the green, downward pointing arrow. A download of eclipse-java-helios-SR2-macosx-cocoa.tar.gz will start. If you first get a window like this
just click "OK" so that the downloaded file opens with Archive Utility.
Of course, the workspace name will have your user name in place of "thc." You can choose whatever place you want for your workspace, but it's easiest to just use the default you're given. I recommend that you just click the checkbox next to "Use this as the default and do not ask again" and then click "OK."
Click on the folded-over arrow on the right. You won't see this screen again, even if you quit Eclipse and relaunch it.
Lots of buttons and panes, but nothing of consequence.
As you can see, there's some text following "Java Editor Text Font." Don't worry about it.
On the right, where you can select the size, click "12." Then close this window by clicking on the window's close button.
You can type in any profile name you like. I used "CS 5":
Then click "OK."
Change the tab size to 2:
You'll see that the Indentation size automatically changes as well.
Close the color picker window by clicking its close button, and click "OK" again to close the Preferences window.
You'll get something like this:
And you're done!