Hi there ,
Option 1 - open your document and choose from "File" menu option "Save As..." , in the opened dialog box chose "save as web page" from the "save as type" drop list.
Option 2 - write in notepad the following code:
<html>
<body>
<font>
PASTE YOUR TEXT HERE
</html>
</body>
</font>
then choose "Save as" from "File" menu , write the desired name followed by ".html"
Please make sure you choose "All files" in the "Save as type" drop down list