So, pictures tell a thousand words. Due to some confusion that invariably comes along with computer programming, I now present...the symbol solution with PICTURES!! TADA!!!
This is meant to be a supplement with the original solutions; however, some of us are visual learners. Plus, this stuff is picky. Anyway, the pictures came from Wordpad Windows 98. Old, yes. But it works.
1. Write as usual. Save as usual. Convert whatever you have to an HTML file. Open up the source code for that HTML file. The screen (which is Wordpad in this example) should look like this, and the text of your fic in the space "YOUR TEXT HERE."
Note: You must have the tag ; if you don't see it, you did something wrong. Perhaps you're not in Wordpad or Notepad. Perhaps your're using Microsoft Word's way of editing HTML files. Perhaps you're using Frontpage or some other fancy pants stuff. Well, if it's fancy pancy, there's probably somewhere in all that stuff that lets you directly edit the HTML code. That's what you want.

2. Get the [Replace] function and fill in appropriate boxes. In this example, I'm fixing the asterick.

3. Select [Replace all]. Repeat as needed for other symbols. Now, the screen should look like this:

4. Save your altered source code (which is read in WordPad or Notepad) as a HTML file (which creates a new HTML file from the source code that you just altered). In this example, you use the [Save As] option and add the name ending [.html] . If the original file was named "FicName", the new file (one with entity symbols) is conventiantly named "FicName - v2" .

5. The two HTML files, "FicName" and "FicName - v2" look exactly the same. But as can be seen above, the code is different. Now, when you upload, make sure you are uploading "FicName - v2.html" . Not the source code, which is a text file; but the HTML file.
There. Hopefully that helped. Once again, if you still have problems, e-mail me with step-by-step procedure of what you did. Like in your math textbook when it is telling you how to use your graphing calculator. I know this works; I've done it and I've just tested it. Seriously though, it's not that complicated. All you're doing is opening the code for the HTML files, changing them, and then making a new HTML file. I've done this zillions of times in my beginner computer programming class. Any simple HTML 4.0 book can show you how to do this.
But in any case; e-mail me if you have problems. You know, if I could just find a way to send you a video that'd be even better. (WSJ notes that if that happens, it will not be on my website. @_@ I have not the bandwidth for it!) Or one of those internet cameras or something. Except we don't have one. Oh well. See you guys around ff.net! Rock on!
~LoneWolf16