kerberos und windows xp

ksetup /SetRealm PATRICK-PREUSS.DE
ksetup /AddKdc 10.0.12.32
ksetup /AddKpasswd PATRICK-PREUSS.DE 10.0.12.32
ksetup /SetComputerPassword somethingverysecret
ksetup /MapUser rt01@PATRICK-PREUSS.DE rt01

C:\Documents and Settings\rt01> ksetup
default realm = PATRICK-PREUSS.DE (external)
10.0.12.32:
       (no kdc entries for this realm)
       Realm Flags = 0x0 none
PATRICK-PREUSS.DE:
       (no kdc entries for this realm)
       kpasswd = 10.0.12.32
       Realm Flags = 0x0 none
Mapping rt01@PATRICK-PREUSS.DE to rt01.