A short question like that begs the short answer yes.
A couple of things- give some detail if you want help- you haven't even
given the version of your program, whether it had ever worked, if it changed
what happened around that time- updates etc? Have you checked for viruses
and spyware with software using up to date definitions.......
And there are newsgroups for Outlook Express- this is for the operating
system- you'll be more likely to get better help in the relevant groups. But
give them some information so they have a chance of helping.