ASP.NET, SQL Server, WPF, C#, VB.NET

Hi, I'm a little confused regarding the migration I'm planning!  
  
I have created a new W2003 Domain which I plan to migrate user accounts etc  
  
from our existing NT4 Domain. I was planning to establish a two way trust  
  
between the two domains to enable me to run them side by side until all  
  
teething problems are resolved. As ADMT requires W2003 to be in Native mode,  
  
will users logged onto the new domain still be able to access resources in  
  
the NT4 domain. Does it just mean that any NT4 servers would not be able to  
  
log onto the new domain?  
  
Thanks, Neil.

Hi Neil,  
  
With a AD 2003 in Native mode, you cannot have NT4 BDCs; but you can  
  
have NT4 member servers and trust relationships with NT4 domains.  
  
You may experience difficulties trying to stablish the trust  
  
relationship since by default security policies in AD 2003 domains are  
  
very restrictive. But it's not because the domain is in Native mode. If  
  
you experience problems, try relaxing the security policies a little  
  
bit.  
  
Luck,  
  
Emilio

Yes.  
  
Make sure you have the trust relationship in place, and try to use ADMT  
  
or like tool, that migrates SIDHistory. Since the SID cannot be  
  
migrated, ADMT saves it to the SIDHistory, which allows users and  
  
groups to access resources to which they had access before migration.  
  
Please check:  
  
http://technet2.microsoft.com/WindowsServer/en/Library/d2ff1315-1712-48e4-acdc-8cae1b593eb11033.mspx  
  
for instructions on how to restructure a NT4 domain to AD.  
  
Luck  
  
Emilio

If it's not a name resolution problem, you should check the security  
  
policies on your AD 2003.  
  
Take a look at the following KB article:  
  
http://support.microsoft.com/kb/889030/en-us  
  
There are a lot of things to consider, but I think it's all there...  
  
Luck