Can I force OE to let me compose email in plain text, as you do in Outlook 2000?

I have set the font in Tools-Options-Compose to Courier New (which looks like plain text), but all of my new messages use Times New Roman. I am not using stationery, and I have set Tools-Options-Send to send as plain text. When I send the messages, they are received as plain text, but I can't get a plain text look and feel in OE.