That scan32.exe isn't designed for that. It runs pre-set tasks using a -task switch and the GUID of the scan task. The GUIDS for scan tasks are available HKEY_LOCAL_MACHINE\SOFTWARE\McAfee\DesktopProtection\Tasks
There is csscan.exe in the same directory which does accept command line input, but I don't think it has a ADL (or equivalent) switch.
You probably want the command line scanner for windows (available from software downloads page), which supports the /adl switch.