Can't compile a driver

[sulacco]

Hi, Pros! Can't compile a drive it shows me something like this:
<code>
BUILD: Computing Include file dependencies:
BUILD: Examining c:\winddk\2600~1.110\example directory for files to compile.
Compiling c:\winddk\2600~1.110\example directory ********************
'nmake.exe /c BUILDMSG=Stop. -i NTTEST= UMTEST= NOLINK=1 NOPASS0=1 386=1'
cl /nologo /MD /W3 /Oxs /Gz /Zi /I "..\..\..\..\inc" /I "\NTDDK\inc" /D "WIN32" /D "_WINDOWS" /Fr.\obj\i386\\ /Fo.\obj\i386\\ /Fd.\obj\i386\\ /c .\entry.c .\functions.c
entry.c
entry.c(15) : fatal error C1083: Cannot open include file: 'wdm.h': No such file or directory
functions.c
functions.c(15) : fatal error C1083: Cannot open include file: 'wdm.h': No such file or directory
Generating Code...
link.exe /LIBPATH:..\..\..\..\lib /LIBPATH:\NTDDK\libfre\i386 /DEBUG /PDB:..\..\..\..\bin\SYMBOLS\example.PDB -entry:DriverEntry /SUBSYSTEM:NATIVE /nologo wdm.lib ntoskrnl.lib /out:..\..\..\..\bin\example.sys .\obj\i386\entry.obj .\obj\i386\functions.obj wdm.lib ntoskrnl.lib
LINK : fatal error LNK1181: cannot open input file 'wdm.lib'
rebase.exe -b 0x00400000 -x ..\..\..\..\bin\SYMBOLS -a ..\..\..\..\bin\example
"rebase.exe" *Ґ пў«пҐвбп ў*гваҐ**Ґ© Ё«Ё ў*Ґи*Ґ©
Є®¬**¤®©, ЁбЇ®«*塞®© Їа®Ја*¬¬®© Ё«Ё Ї*ЄҐв*л¬ д*©«®¬.
Compile errors: not linking c:\winddk\2600~1.110\example directory ********************
</code>
I can only guess that something wrong with enviromental variables but
what it is?
Tnx in advance