2008 server won't join NT4 domain

got 2008 server standard , tried add domain. have nt4 sp6 dc , no bdc @ moment. keep getting unkown user , password no matter what. tried answer has worked other people isn't working me. doesn't matter if add computer dc server list or not.

1. srvmgr.exe on pdc , add computer name of vista pc.
2. on vista pc run, secpol.msc under local policies > security options,
3. change following
- domain member: digitally encrypt or sign secure channel data (always) - change disabled
- network security: lan manager authentication level - change "send lm , ntlm - use ntlmv2 session security if negoitated"

logging in domain\user username.

checked event log - don't know if means event id 4648 - logon success audit using process svchost.exe - event details...
this event generated when process attempts log on account explicitly specifying account’s credentials. commonly occurs in batch-type configurations such scheduled tasks, or when using runas command.

any ideas? thank you.

after doing steps you've mentioned, have tried using netdom join machine (vista or server 2008?) domain? 

http://support.microsoft.com/kb/150493

regards,

salvador manaois iii
mcse mcsa ceh mcitp | enterprise/server admin
bytes & badz : http://badzmanaois.blogspot.com

Windows Server  >  Directory Services