Submessage 1 - Message Summary
BYTE[4] BoardID
BYTE[4] MessageID
BYTE[4] ParentID (0 if top level)
BYTE posterLen
BYTE[posterLen] poster (null terminated string)
BYTE subjectLen
BYTE[subjectLen] subject (null terminated string)
BYTE timeLen
BYTE[timeLen] time (null terminated string with time of posting) ("Day 1 @ 11:28")