什麼是*.tlb??(編號:8043)

內容如下:                             // Generated .IDL file (by the OLE/COM Object Viewer)
//
// typelib filename: <could not determine filename>
[
uuid(068B07FF-718C-11D0-8B1A-00A0C91BC90E),
 version(1.0),
 helpstring("NmManager 2.0 Type Library")
]
library NmManager
{
// TLib :   // Forward declare all types defined in this typelib
  interface INmManager;
  interface IUnknown;
  interface INmSysInfo;
  interface INmConference;
  interface INmMember;
  interface IEnumNmMember;
  interface IEnumNmChannel;
  interface INmChannel;
  interface INmChannelData;
  interface IEnumNmConference;
  interface IEnumNmCall;
  interface INmCall;
:                              :                              在VC裡面可以include的, 那在vb裡面要如何使用??                                                            thankx for your help!