OT FireFox - ascii/html symbols displayed

[linuxmaillists at charter.net]

Most of the ascii/html symbols display correctly in FF on 
Linux but some don't (even less display correctly on 
Windows). Is there any kind of plugin or extension 
available to get the rest of them to display?

Examples:

 shows rectangle box with a 007F number inside it.
     show a diamond with a ? 
inside it.

the higher the numbers go the more this happens with even 
less actually showing a symbol and not a place holder.

I have created some tables displaying these symbols up to 
㋈ there are a lot of cool symbols but there are a 
lot more place holders than symbols.

-- 
If the word following begins with 
a vowel, the word you want is...
to read the rest of this, go here 
http://www.wsu.edu/~brians/errors/a.html