Migrating Domain User Profiles from old Computers to New Computer

First time poster, but have used the site for a while to get some of my
IT questions answered.

As for my question, I have been looking over the site and the search
engines for an answer but I haven't found it. I figure this isn't the
first time someone has come across this situation and I probably do not
know how to enter in the correct keywords to find an answer...

Anyways, I have been tasked with migrating Domain User accounts from old
XP pro computers that are being decommissioned to newer XP machines.

The computers are all setup and will have the needed software installed,
so all I need to do is grab their user data and settings and migrate
them over to their new XP Pro PCs.

So my question is, how do I go about doing this. I have done local
profile and data migrations using FAST, but how is it done when using a
Domain.

Thanks for you help...