------------------------------------------------------------------------ Because of this...
BlackBerry Web Client is an internet-based email interface that allows you to set up email accounts to be wirelessly extended to your handheld including MSN, Hotmail, AOL, Outlook, Notes, IMAP or POP3/ISP email. Email is redirected wirelessly to your BlackBerry Handheld so you can send, receive, forward and reply to messages while you're on the go. You can also view popular document attachments on your handheld.
------------------------------------------------------------------------ Sounds like you need this, since it's redirecting into BB's own browser which sounds like it has problems displaying HTML emails...
I had never realised quite how annoying it was not being able to read HTML emails on the Blackberry until I found out there was a piece of software that would allow you to do it - Empower HTML Email Viewer. Ah ha! I thought to myself, that is just what I need. I have about 4 email accounts coming through my Blackberry and a couple of them are web ones like Hotmail. At the moment, these web mails are generally unreadable unless they are a simple conversational exchange between myself and a friend/colleague. I just ignore them and go check them out once online again. Then I found out about Empower HTML viewer and this review said it was great and just what I needed.