Just change "username" above to the name of the user whose tweets you'd like to widgetize, change the "count=" to the number of tweets you'd like to display, and paste into your webpage.
Just like that, you have your first tweeter's widget.
<iframe id="tweeter1" src="tweeter1.html">
Note that the tweeter's individual pages will need to include a link to the .css file you're using to style them, as the styles from the main page where you're embedding the iframes will not apply to the pages contained within iframes.
This is not a terribly elegant -- nor, unfortunately accessible -- solution, but it's the only way I could figure out to get around the one badge per page bug.