Outlook Express Broken

About a month ago, my computer would not open program files without a right click and open.

About the same time, my Outlook Express decided it didn't want to display messages. Inbox, oubox, drafts, templates, etc. It breaks them down into attachments without displaying the message.

Also, my computer will not update anything, my "search" feature won't open...

Any help would be greatly appreciated (outside of burn it).