Cannot install MS Update for windows 7

Help! I am a windows 7 32-bit user and I can't finish installing updates on my
PC. This is the error message I get when trying to install "Update for Microsoft Silverlight (KB2416427)" as requested by Microsoft update.

The feature you are trying to use is on a
network resource that is unavailable.

Click OK to try again, or enter an alternate path to a
folder containing the installation package
'silverlight.msi' in the box below

When I locate the file in question and click 'OK', the exact same error
shows up. When I go to and try installing Silverlight again, it
gives me the same error yet again. When I try to uninstall the Silverlight
software, it gives me a similar problem and won't let me remove it from my PC.

Any help would be greatly appreciated.
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Are you an administrator on the machine?
Clean up the previous silverlight install:

Then try installing silverlight through

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Windows 7

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