incrediBILL - 3:43 am on Oct 24, 2009 (gmt 0)

Kaled, it's been eons since I've done this but whatever you do you cannot patch the shared version of Kernel32.dll because other apps depend on it that could become unstable and/or the next Windows update will whack it.

What you have to do is create a stub DLL for your functions and then do DLL Injection into the target API.

You can find a good example of DLL Injection [software.intel.com] on Intel's site.