- Set up your 'Default' view with the information you would like to display.
- Add a "Web Widget" display setting.
- In the "Web Widget" display settings - you want to make a path that will only be used for the widget.
- You probably don't want to use the path for an existing page - as it will put your entire Drupal page in the iFrame.
- You can see what the widget will look like by visiting that path after you save the view.
- If the page appears as very plain markup...that's a good sign. You only want to see the contents of your view.
- You can attach the widget display to another display (default, page, block etc.) - it will show up below the views output by default.
As of this writing (7/30/2010), it seems like iFrame works, and inline has an in issue.