What to do if Windows Installer not able to work on Windows Vista?

I am having windows vista home premium but facing issue regarding windows installer. I am getting an error message on windows vista that Windows Installer Service could not be accessed. What does it mean, any help on this matter!!

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This message appears on screen when windows installer is not installed correctly on your system. You have to reinstall the windows installer on your system, Follow the procedure:

> Open the Run command windows by clicking on start button and then click on Run
> Type cmd and hit ok
> Now, type following commands (without inverted coma) one by one and press enter after writing each command:
‘cd %windir%\system32’ and hit Enter
‘attrib -r -s -h dllcache’ and hit Enter
‘ren msi.dll msi.old‘ and hit Enter
‘ren msiexec.exe msiexec.old’ and hit Enter
‘ren msihnd.dll msihnd.old’ and hit Enter
> At last type exit and hit Enter

Restart your PC and log on to the PC again. Now, install Windows Installer latest version, click here http://www.microsoft.com/en-us/downl...s.aspx?id=8483
After downloading and installing again Windows Installer, restart your system and your issue will be resolved.