Go easy; I'm not an engineer.
I am having difficulty getting my files appended with .html, .php, etc. I triple-checked mod_write is on in Options > General; I'm on Apache 2.2.12.
I peeked at the .htaccess file, and though don't totally understand it, see no reason why it wouldn't be working. My only guess is somehow the theme is partly to blame?
Any suggestions what else I can do to get it working?