Some things to try:
Go to Start
Then select: Run
Type in: regsvr32 inetcomm.dll
Then press Enter.
If that didn’t work then in Outlook Express
On the Menu select Tools
Then select: Options
Then select: Read
Then select: Fonts
Change the default encoding setting to Western European (ISO)
Finally in Internet Explorer delete the Temporary Internet Files including all
offline content.
If that also fails to fix the problem then, go here:
http://support.microsoft.com/?kbid=318378
How to Reinstall or Repair Internet Explorer and Outlook Express in Windows XP
Larry R. said:
OutLook Express just stopped working. My e-mails download, all looks normal
except you can not open and read them. You can read the subject lines but not
the e-mail themselves.