I copied this directly from the Flash 4 help files:
You can use Type 1 PostScript® fonts, TrueType®, and bitmap fonts in your Flash movies. Flash exports type to your final movie with all its system information intact. Type you create while authoring on one platform may not appear properly on other platforms; moreover, your audience must have the type's font installed for it to display properly, even on the same platform.
You can avoid these potential conflicts by using special fonts in Flash called device fonts. Flash includes three device fonts named _sans, _serif, and _typewriter. When you set type in these fonts, the Flash Player uses whatever font on the local computer that most closely resembles the device font. Device fonts are particularly useful for text fields, for large blocks of type where you may not want anti-aliasing, and for making the published movie smaller because no outlines are needed. Breaking apart type to convert characters to shapes also eliminates potential conflicts, but it does increase file size. See Reshaping type.
Not all fonts displayed in Flash can be exported with a movie. A good way to tell whether or not a font will export properly is to turn on View > Antialias Text. If the type remains jagged, then Flash does not recognize that font's outline and will not export the text.
I don't know who to belive, I tested a few of my swf by uploading then to my site, and I did have a problem, yet at work we tested some stuff and no problem..........???
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