DriverStudio+VC+DDK2000编译问题，请高手指教！

通过DriverStudio打开VC 6.0 项目为 VdwLibs.dsw   在XP系统下 rebuild All出现如下问题。请高手指点




Deleting intermediate files and output files for project 'NdisWdm - Win32 IA64 Free'.

--------------------Configuration: NdisWdm - Win32 IA64 Free--------------------

Compiling...

Command line error D2021 : invalid numeric argument '/Wp64'

Error executing cl.exe.

 

kndiswdm.lib - 1 error(s), 0 warning(s)

The following environment variables were not found

$(WINVER)

$(NTDDI_VERSION)

$(_WIN32_IE)

$(_WIN32_WINNT)