If you google "outlook express password recovery" you'll find a whole lot of utilities that can do this. The programs I came across were all demos that would recover the first 3, or a few random digits of the password. You needed to pay to get the fully functioning versions. That said, all I needed were the first 3 digits and that was sufficient for me to remember the full password.
I took your advice and did a google to find the program. It is now sorted. MAJ I must be losing my grip because Ino matter how hard I looked I could not find out where to download your recomendation???? :-(( Old age I suppose. Anyway thanks for trying.