Sorry I'm late on this . . . because I just joined the forum side. . . but I'm not sure if it is because I changed my profile to show "enhanced" under the content editor section, or because I use Firefox for my browser, but I have spell check. It works just like Microsoft Word. If you spell something incorrectly it will be underlined in red. Then you can right-click on the word, and it will give you options for corrections. It works really great. When I first signed-up, it did not default to "enhanced" for the content editor, so you might try that just to see if it works for you.
George