Help! Why can't I log on????



I am receiving my email on my Blackberry but, not on my home computer.
Ever since last night I keep getting this message:

Account: 'pop.charter.net', Server: 'pop.charter.net', Protocol: POP3,
Server Response: '-ERR invalid user name or password.', Port: 110,
Secure(SSL): No, Server Error: 0x800CCC90, Error Number: 0x800CCC92

Any help would be greatly appreciated.
Thank You!
.