Format of NESL Event Parameter Block (EPB):
Offset	Size	Description	)
 00h	WORD	EPB_MajVer  Major Version of this structure (=1)
 02h	WORD	EPB_MinVer  Minor Version of this structure (=0)
 04h	DWORD	EPB_ClassName  -> ASCIZ string identifying event class
				  (see #03025)
 08h	DWORD	EPB_EventName  -> ASCIZ string identifying event within
				  class (see #03026)
 0Ch	DWORD	EPB_ModuleName -> ASCIZ string identifying module
				  producing event
 10h	DWORD	EPB_DataPtr0   -> event-defined data or NULL if not used
 14h	DWORD	EPB_DataPtr1   -> event-defined data or NULL if not used
 18h  8 BYTEs	EPB_Reserved (all zeros)