我在win7 下xp环境下编译fisrt.sys居然编译不通过，求大伙帮忙看一下：

path contains nonexistant "c:\program files\pkware\pkzipc", removing
BUILD: Compile and Link for x86
BUILD: Loading c:\winddk\7600.16385.1\build.dat...
BUILD: corrupt database (Directory error)
BUILD: Computing Include file dependencies:
BUILD: Start time: Fri Dec 09 10:52:44 2011
BUILD: Examining c:\驱动学习\工程\hello directory for files to compile.
    c:\驱动学习\工程\hello Invalidating OACR warning log for 'root:x86chk'
BUILD: Saving c:\winddk\7600.16385.1\build.dat...
BUILD: Compiling and Linking c:\驱动学习\工程\hello directory
Configuring OACR for 'root:x86chk' - <OACR on>
_NT_TARGET_VERSION SET TO WINXP
Linking Executable - objchk_wxp_x86\i386\first.sys
1>errors in directory c:\驱动学习\工程\hello
1>c:\驱动学习\工程\hello\bufferoverflowk.lib(gs_support.obj) : error LNK2019: un
resolved external symbol _DriverEntry@8 referenced in function _GsDriverEntry@8
1>c:\驱动学习\工程\hello\objchk_wxp_x86\i386\first.sys : error LNK1120: 1 unreso
lved externals
BUILD: Finish time: Fri Dec 09 10:52:53 2011
BUILD: Done
    0 files compiled - 1 Warning
    1 executable built - 2 Errors

已解决!
代码中有字母打错了：（

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