Format of Da Vinci eMail "NetInitStart" parameter block:
Offset	Size	Description	)
 00h	WORD	segment of ???
 02h	WORD	offset of ???
 04h	WORD	high part of long ???
 06h	WORD	low part of long ???
 08h	WORD	high part of long ???
 0Ah	WORD	low part of long ???
 0Ch	WORD	high part of long ???
 0Eh	WORD	low part of long ???
 10h	WORD	high part of long ???
 12h	WORD	low part of long ???