INT 2A - NETWORK - GET NETWORK RESOURCE AVAILABILITY                            
	AX = 0500h
Return: AX reserved
	BX = number of network names available
	CX = number of network control blocks available
	DX = number of network sessions available
Notes:	supported by PCIBM PC LAN Program, LAN Manager, LANtastic, NetWare, 10NET,
	  etc.
	the application should call this function before using any network
	  resources, and maintain its own count to avoid exceeding the
	  network's resource limits
SeeAlso: AH=00h,AH=01h,AH=04h,INT 5C"NetBIOSOne of a number of low-level device-independent network interfaces; the other major interfaces are Novell's IPX and the Internet's IP (Internet Protocol, the lower-level portion of TCP/IP)."