I need to add a RSS feed manually to IE8 (i.e. not using the orange button). I just want to be able to input the URL.
Edit: While my specific problem has gone away, this question still needs an answer (though I suspect it isn't possible).
I would be interested in why you want to do this -
That being said, if you are talking about from a developer point of view, you may be better off asking on StackOverflow, however if you are just talking about one offs, then simply type the full XML/RSS feed address into the address bar - such as - "http://superuser.com/feeds"
You should then have the subscribe buttons.
The actual location is
However, I am not sure how it is encoded or how you can manually add to them.
I currently have this problem myself (I'm using IE 11 Consumer Preview on Windows 7 Pro). The only solution that I know of is to export the Feeds (File --> Import and Export) to an OPML file, manually edit that to include the feed you desire since it is human-readable, and import it back in. That's what I'm going to try.
By the way, on Windows 7 you can use %LocalAppData%\Microsoft\Feeds to see the raw feed files.