Portable "Outlook Express" for USB Flash Drive

[BLUE SKY THINKER]

Can anyone recommend a freeware download to enable me to use my "Outlook Express" set-up on a USB flash drive?

I understand such programs allow usage completely independent of the host computer it is plugged into, both in terms of activity history and - presumably - conecting direct to your personal incoming POP3/outgoing SMTP servers (?).

Thanks in anticipation.