I've added about 5 of my ISP's different mail identities to the mail
accounts, one by one, so everything from my ISP (about 6 different
identies/alias) ends up coming to the inbox here in outlook express, even
included a hotmail account which works fine too, it all works actually,
apart from just the one identity which keeps prompting me to re-enter my
username/password which never seems to work.

I've tripple checked the account details are all correct, (even removed the
account from OE and re-added it carefully with the correct details) it lets
me log in fine with the details when i goto my isp's email log on page via
their web page log in so i know the account works fine with the right
details, and all the details are exactly the same as the other alias i set
up through OE apart from thr actual email address and password.

So why would it keep refusing my password when it checks mails through OE
(all other accounts working fine through OE on the mail check).

Have checked the 'pop enabled' setting was on in my ISP email setup page in
the mail prferences online too, as that makes a difference, but it looks
like its on same as all my other ccounts.

Cheers for anyone who can shed some light on this.