What should I do about this error?

[had]

--------------------Configuration: Mir2Ex - Win32 Debug--------------------
Compiling...
StdAfx.cpp
e:\microsoft visual studio\vc98\include\rpcndr.h(58) : fatal error C1189: #error : incorrect <rpcndr.h> version. Use the header that matches with the MIDL compiler.
Error executing cl.exe.
Creating browse info file...
BSCMAKE: error BK1506 : cannot open file '.\Debug\StdAfx.sbr': No such file or directory
Error executing bscmake.exe.

Mir2EI.exe - 2 error(s), 0 warning(s)

[had]

How to update my MIDL compiler version?

[Mick]

install the platform SDK from msdn.microsoft.com should have the latest version in that, along with the latest version of rpcndr.h

http://whidbey.msdn.microsoft.com/library/default.asp?url=/library/en-us/midl/midl/using_the_midl_compiler_2.asp