哪位大虾能告诉我这些警告是什么意思?

我在编译DDK2000自带的一个例子(packet)的时候出现警告，哪位大虾能告诉我这些警告是什么意思，为什么会出警告，该怎么样修复这些警告？

--------------------Configuration: Test - Win32 Debug--------------------
New or updated MSVC detected.  Updating DDK environment....
Setting environment for using Microsoft Visual C++ tools.
Starting dirs creation...Completed.
E:\\DriverEntry\\Test
BUILD: Object root set to: ==> objchk
BUILD: /i switch ignored
BUILD: Compile and Link for i386
BUILD: Loading C:\\NTDDK\\build.dat...
**********************************************************************************
BUILD: Computing Include file dependencies:
BUILD: d:\\microsoft visual studio\\vc98\\include\\exdisp.odl(31): d:\\microsoft visual studio\\vc98\\include\\exdisp.odl - invalid include statement: importlib(STDOLE_TLB);
BUILD: d:\\microsoft visual studio\\vc98\\include\\vidsvr.odl(16): d:\\microsoft visual studio\\vc98\\include\\vidsvr.odl - invalid include statement: importlib(STDOLE_TLB);
BUILD: d:\\micros~1\\vc98\\include\\exdisp.odl(31): d:\\micros~1\\vc98\\include\\exdisp.odl - invalid include statement: importlib(STDOLE_TLB);
BUILD: d:\\micros~1\\vc98\\include\\vidsvr.odl(16): d:\\micros~1\\vc98\\include\\vidsvr.odl - invalid include statement: importlib(STDOLE_TLB);
**********************************************************************************

BUILD: Examining e:\\driverentry\\test directory for files to compile.
    e:\\driverentry\\test
    e:\\driverentry\\test - 5 source files (2,585 lines)
BUILD: Saving C:\\NTDDK\\build.dat...
BUILD: Compiling e:\\driverentry\\test directory
Compiling - packet.rc for i386
Compiling - packet.c for i386
Compiling - openclos.c for i386
Compiling - read.c for i386
Compiling - write.c for i386
BUILD: Linking e:\\driverentry\\test directory
Linking Executable - objchk\\i386\\packet.sys for i386
BUILD: Done
    5 files compiled -  1292 LPS
    1 executable built

packets.sys - 0 error(s), 0 warning(s)