SetComputerNameExA undeclared identifier

Hi,
I can't get my compiler to see SetComputerNameEx.
I included windows.h, kernel32.lib and I set the winver like so:

Code:

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#define _WIN32_WINNT 0x0501
#define WINVER 0x0501

---

I installed the new sdk a few months ago and I can see the SetComputerNameEx in the winbase.h file, but my compiler can't see it.

What did I forget to do??

Thanks,

Okay I fixed it.
I just moved the winver definitions to the top of StdAfx.h