Thanks for your contribution.
You can definitely embed SWF files. In the HTML editor, you just need to click the last button in the second row of buttons, and locate the file (or upload it). The only thing which doesn't work that well is if your file loads external content like XML or similar. If it does that, there's a work-around, but it's a little complex, so I'll only elaborate if you need it.
The preview function in the Author view of the CMS doesn't support the code highlighting. That's actually built into the end-user view, so you can't see it until the article is live, but as long as you've only put plain text (no HTML formatting) between the tags, it'll work just fine.
Please don't email or PM
me Flash questions, that's what the Forums are for!
Please don't rely on me reading my PMs either. Email me about important stuff.