e-mail glitch

I just switched from ev1.net to SBC's DSL for internet
service. When opening e-mail I first get a request to
sign in to ev1 which I no longer have. The screen says:
mail.ev1.net

When I open e-mail and click on one particular message I
get the following error messages:

1)There was a problem logging onto your mail server. Your
Password was rejected. Account: 'Everyones Internet',
Server: 'mail.ev1.net', Protocol: POP3, Server Response: '-
ERR Invalid userid/password', Port: 110, Secure(SSL): No,
Server Error: 0x800CCC90, Error Number: 0x800CCC92

Second message is:
2) Msimn has caused an error in MSHTML,DLL. Msimn will
now close.