I have 2 domains - one called students and one called teachers.

I have migrated the users to the teachers domain.

However, the students cannot now access Sharepoint as, of course,
they have a different SID registered in the Sharepoint databases.

I have followed the instructions in article 896593
(http://support.microsoft.com/kb/896593/en-us) and individual users
now have access.

I have read article 896161 (http://support.microsoft.com/kb/896161/en-
us) but as we are already on SP2 of SPS I dont htink this applies.

My question is this - individual users seem to have access if their
account is specifically mentioned in the "Manage Users" section of
individual sites. However, as note in the first article,

You receive a "The user does not exist" error message if either of
the following conditions is true: • The user information that you
specify in the new login name value is a domain group.

So, how do I correct the incorrect group names and switch them over
to the correct domain\group names or SIDS on the services sites (I
dont mind doing the one portal site by hand but dont want to do the
hundres of swervices sites and subsites you see).

If anyone has any suggestions ...........