SDK Installer for Visual Studio ?

I made an SDK installer which copies *.h and *.lib files
to the installation folder.

But I couldn't update the Visual Studio 2005 IDE
settings to add the folder path to the include and library paths.

How can I do that?
Thanks in advance.

Add the path to IDE manually then Grep on the path you added, and search in the registry on this path, then you know what to alter, after that search the forum and wiki on how to ajust registry and write to ini files.

Sorry, I tried that way.
But I couldn't find the match in the registry or VS setup dir.

Maybe VS2005 settings are encrypted ??

Oh, I found the string on
My Documents\Visual Studio 2005\Settings\CurrentSettings.vssettings

But it seems very complicated..