do a smart .NET 3.5 install...

The main problem (as I see it) with the .NET install, that it is not "smart" enough. I mean run it once or twice it will allways run the same install.
If you want to make sure your clients is .NET "enabled" just use my small startup script (or SCCM).

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reg query "HKLM\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5" /v Version | findstr "v3.5"
if %errorlevel%==0 goto end

"%~dp0dotnetfx35.exe" /q /norestart
exit /B %errorlevel%

:end
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