This Greasemonkey script should work something as follows:
1. User logs into a hotmail (or [url removed, login to view]) account.
2. User activates script.
3. Script opens any unread messages. Script waits a random (configurable) amount of time before opening a new message that comes in.
4. The script opens any messages added to the junk mail folder. The script is configured with a list of regexps to match "from", "to", or "subject". If a message comes in matching a pattern that has been configured in the script, the script clicks "not junk" for the message then opens the message in the inbox.
5. When waiting for a new message to come in, the browser should display the last read message to allow the user to read it if they are looking at the screen.
Nice to have: Work with google chrome (which supposedly now supports the same greasemonkey scripts as firefox, I just don't know how)
If you have any clarification needed please just let me know.