The Bloglines Browser Plug-In will enable you to use the Bloglines RSS aggregator from your browser and subscribe to RSS feeds with one click. The plug-in will be integrated into the RSS Aggregator functionality of your IE7 browser bar and will be accessible through the RSS Aggregator button in your IE7 browser bar. You will need to register with http://www.bloglines.com to use this plug-in.
Thanks to Thord Hedengren at the Blog Herald for finding this. The Blog Herald also points to more RSS add-ons for IE7. There are also RSS add-ons for Firefox. Companies like Yahoo and USA Today are also going to be launching customized versions of IE7.
The new 
