I thought this may save someone a little time:
WHen using BlogEngine.net as your blogging tool, you can format your code using one of the extensions which comes with the tool.
some of the things to remember:
1- first create an opening and closing [code] tag surrounding some zzz characters. Simply type the characters in the editor, all lower case, and make sure to press "ENTER" after each line:
(ignore the space I added after the opening brackets)
2- Do not copy your code directly from Visual Studio. Copy it first to Notepad, then copy from Notepad to replace "zzz". Make sure it only replaces the 3 z characters, not the linefeed after them.
And that's it. BlogEngine.net extension formats your code beautifully.
UPDATE: BlogEngine now uses <pre></pre> tags for syntax highlighting. Please see http://alexgorbatchev.com/SyntaxHighlighter/