INT 1A - SNAP.EXE 3.2+ - "SNAP_BEGINCONV" - BEGIN CONVERSATION
        AX = 6308h
        STACK:  WORD    offset of ASCIZ "guardian"
                WORD    offset of ASCIZ hostname
                WORD    offset of ASCIZ server name
                WORD    offset of ASCIZ userid
                WORD    offset of ASCIZ password
                WORD    offset of password length
                WORD    offset of password type
                WORD    offset of "Cparms" structure (see below)
Return: ???
        STACK unchanged
Note:   all stacked offsets are within the SNAP data segment (use AX=6A01h
          to allocate a buffer)
SeeAlso: AX=7202h

Format of Cparms structure:
Offset  Size    Description
 00h    WORD    retry delay in seconds
 02h    WORD    timeout delay in seconds
 04h    WORD    maximum buffer size
 06h    WORD    encryption level