When it comes time to remove the legacy logon scripts during the SBS 2003 to SBS 2008 migration process, the instructions are not quite correct:
When we navigate to the SYSVOL via UNC path, we are viewing the contents of the Scripts folder in Read-Only mode.
On the destination SBS 2008, open Windows Explorer and navigate to the SYSVOL\SBSDomain.local\Scripts folder to delete the scripts there.
Note that there will be a few UAC prompts for the delete command.
Any mapped network drives can be rerouted to the new server using Group Policy Preferences instead of a script. In fact, Group Policy Preferences can be used for most any setting that was contained in the legacy scripts.
Microsoft Small Business Specialists
Co-Author: SBS 2008 Blueprint Book