INT 21 - Novell NetWare - NetWare shell - CONVERT DOS FILE HANDLE TO NETWARE    
	AX = E909h
	BX = DOS file handle
Return: AX = 0000h if successful
	    BX:CX:DX = NetWare file handle
Notes:	this function is partially a reverse of "AttachHandle" (AH=B4h)
	many NetWare 3.x functions use a four-byte file handle, which appears
	  to be the high four bytes of the six-byte NetWare handle
SeeAlso: AH=B4h"NetWare"