INT 21 - LANtastic v4.1+ - TERMINATE USER
AX = 5FCBh
ES:DI -> ASCIZ server name in form "\\machine"
DS:SI -> blank-padded username.  A null char = wildcard.
DS:DX -> blank-padded machine name.  A null char = wildcard.
CX = minutes until termination (0 = immediate)
Return: CF clear if successful
CF set on error
AX = error code
Note:   you must have the "S" privilege to use this call
you cannot log yourself out using this call

See also: 215F82

215FCB - LANtastic v4.1+ - TERMINATE USER