EQEMu Loginservers:
You need to create the account/password yourself.
Here:
http://www.cyberjunky.net/signup/
Suggestion to use:
Here:
http://eqw.eqhackers.com/
Then you need to get the eqhost.
Here:
http://www.eqemu.net/eqhost.txt
(Right Click Save As and save into your EQ folder)
(When you patch it overwrites it so you'll need to make a backup of it if you want to patch)
Minilogin:
When entering it automatically creates the account.
If it's a minilogin problem, i'm willing to bet your didn't change the eqhost.