Errore installazione SQL Management studio Windows 7 e Vista errore 29506

For Windows 7 64 bit you have to use the 64 bit CMD prompt (I didn’t even know there was a separate version) and then run this as administrator. So I did the following…
1. Right click on desktop and click NEW – SHORTCUT
2. Create shortcut to C:\Windows\SysWOW64\cmd.exe
3. Right click on the new shortcut and Run AS ADMINISTRATOR
4. Enter full path and file name:
e.g. C:\Users\[YOUR NAME]\Downloads\SQLServer2005_SSMSEE_x64.msi
Where [YOUR NAME] is the windows user you are using.