Adding a user is described in both example files and the documentation. Automatically logging it in requires a registry value, which you can find in the Unattended Guide.
- Making CD/DVD-switching fun. / VMcleaner
- Cleaning your virtual memory by killing unnecessary tasksWinampUser
- Silently install multiuser functionality for Winamp / OfficeExec
- Installing Office at T-12/cmdlines.txtDropper
- Changing file properties by drag-'n-dropping (not for unattended use)