INT 2C P - Cloaking v1.01 - "Switch_VMs_and_Call_back"
	AX = 0011h
	EBX = handle of VMsee Virtual Machine to be made active
	SI:EDI -> 32-bit FAR completion procedure
Return: CF clear if successful (scheduled)
	CF set on error
Notes:	this function is only available while MS Windows is running
	the completion procedure is called with CF clear if the specified
	  VMsee Virtual Machine has been made active, or with CF set on error
SeeAlso: AX=000Fh,AX=0012h