You'd get a more expert answer if you posted in a newsgroup that was specific
to Outlook Express. OE is part of Internet Explorer, not Microsoft Office
which is what this group supports and has expertise in.
http://www.microsoft.com/windows/ie/dgbrowser/en-us/default.mspx
Choose your version from there. When you post, please include your version
of OE and account type (POP3, etc.), as well as any error messages/numbers,
and troubleshooting steps you've taken.