Is it possible to download mail currently accessible only by logging into a Microsoft Exchange Server into an IMAP or POP account in my Outlook Express? My new job requires an email address in this system and it is a huge pain to log on to their Exchange site at home just to check email. Also, if it is possible, how do I locate the settings necessary to set up this new IMAP or POP 'account' in Outlook Express? Thank you for any insight!

If the Exchange server administrator enabled IMAP/POP access then you can access it that way. Usually you can just use the server you currently use for webmail acesss. So if you visit http://mail.example.com to get your email then in the Outlook Express wizard use mail.example.com as the incoming and outgoing server name.
Note: It isn't always the same server though.