Cross-Realm. krb5.conf?

[Dan]

Hello all,

I have few questions about CrossRealm:
I have a realm HERE.COM and I am trying to establish cross realm to
THERE.COM
I added the principals like the FAQ said to.

1. Do I need to add THERE.COM to krb5.conf? If so, where?
2. At first try, I didn't add THERE.COM to krb5.conf, but it didn't
work. Then I tried to add it, but when I telnet to server at THERE.COM I
got "[Kerberos V5 accepts you as user at HERE.COM]" and then I was asked
for password. Why telnet on server at THERE.COM asks for password?
3. Where can I find a good example about cross-realm?

10x!
Dan