[Bug 21362] Windows 7 Platform SDK can't set itself as the default in Visual C++ 2005?

http://bugs.winehq.org/show_bug.cgi?id=21362

--- Comment #2 from Dan Kegel   2010-02-03 14:48:39 ---
Interestingly, 
  wine windowssdkver -version
did *not* fail; rather, it said 
  "There are no Windows SDKs installed on this machine."
+reg showed it digging around in the registry.

Setting the keys

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SDKs]

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SDKs\Windows]
"CurrentVersion"="v7.0"
"CurrentInstallFolder"="C:\Program Files\Microsoft SDKs\Windows\v7.0\"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v7.0]
"InstallationFolder"="C:\Program Files\Microsoft SDKs\Windows\v7.0\"
"ProductVersion"="7.0.7600.16385.40715"
"ProductName"="Microsoft Windows SDK for Windows 7 (7.0.7600.16385.40715)"

made the tool happy enough to be able to list v7.0 as an
installed version, yay!

So why aren't those registry entries set when Windows 7 SDK is installed?