I am in the process of completing a NT4 Server to Win 2003 migration using the Microsoft Active Directory migration tool version 2. Now I have followed all the instructions, made sure my Win 2003 is in native mode, established a trust between both domains, inserted Domain admins in both Target and Source admin groups etc. Now I have successfully migrated all the users across and am now trying to migrate the computers across. When I use the wizard it highlights all the computers and lets me carry out the test but does not complete the migration. It says it is trying to install the migration agent on the target computer but has failed. It keeps coming up with an error saying "Attempting to access registry setting ........ Access is denied". Now of course if I cannot migrate the computers then when the user logs into the new domain they will not have their old profile taken with them which means resetting desktops/start menus/ outlook etc, so I think it is quite essential to complete this. Anybody come across this problem?