EDIT* NEVERMIND. I spent nearly an hour on this last night, unable to delete the cookie.
But I just tried now and it had somehow deleted itself finally.
When I open Hotmail from Internet Explorer, it goes right to one email account. (which is not good, since I have multiple accounts)
I've deleted every single temp file and cookie that I can find, and it still opens back up to that one hotmail account.
There's gotta be a way of deleting this cookie, right? I don't want to have to jump through hoops every time I use Internet Explorer for hotmail.