INT 16 U - PCIBM PC Tools v8+ VSAFE, VWATCH - SET NETWORK DRIVES TEST FLAG
	AX = FA07h
	DX = 5945h
	BL = new state
	    00h don't monitor
	    01h monitor network drives
Return: CF clear
	DI = 4559h
Note:	VWATCH v2.1 (from PCIBM PC Tools 9.0) returns CF set instead
SeeAlso: AX=FA00h,AX=FA06h