Just send it in Word (DOC) or Notepad (TXT) format and FanFiction can handle it themselves changing it over.
I would like to submit a story to the fan fic section for other reader's pleasure, but I have no idea how to send it in HTML format. I acknoledge that it has something to do with internet things but I don't know if you must use a program or if it only has something to do with emailing it, but I am not sure. PLEASE help me!?