Windows and Mac character encoding questions

I have seen some contradictory information about the character encoding 
for Windows text.

One source said that Windows uses ISO-8859-1 for its English-language 
system, then I saw a thread about the Windows-1252 encoding and how it 
differs from ISO-8859-1.

Does Windows 3.x/DOS use the same encoding as Windows 95/98? I have read 
that WinNT uses Unicode, but is the default encoding under the English 
language system different than the other flavors of Win/DOS? IANA lists 
"Windows-1250", "Windows-1254", etc. but does not list our friend, 
"Windows-1252".

On the Mac, the English encoding is called "MacRoman" by the browsers, 
news clients and email clients. IANA does not list "MacRoman" as an 
encoding scheme, instead it lists, "Macintosh". Which is the acceptable 
usage?

I'm using as my IANA reference 
ftp://ftp.isi.edu/in-notes/iana/assignments/character-sets



Just a little confused....

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Deke Smith
Tallent Communications Group, Brentwood TN
deke@tallent.com, 615-661-9878
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" The best way to predict the future is to invent it. " 
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