http://bugs.winehq.org/show_bug.cgi?id=24875
--- Comment #5 from Vincent Beers VincentBeers@gmail.com 2010-10-24 10:39:53 CDT --- (In reply to comment #4)
oh, and it's only one key:
REGEDIT4
[HKEY_LOCAL_MACHINE\Software\Microsoft\NET Framework Setup\NDP\v3.0\Setup] "InstallSuccess"=dword:00000001
Okay, thanks. Noticed that .NET 3.0 doesn't install at all anyway, but that's related more to the software than the installer.