The second (link) is pretty well identical to the first. Perform the steps outlined (manual download/install), then follow the same steps to manually download/install the second.
The last one (KB929300) pertains to - Microsoft .NET Framework
This is supposed to provide;
• Easier installation of commercial applications
Many commercial applications from Microsoft and from third-party companies rely on the .NET Framework to support their core functionality. If you have the .NET Framework installed, commercial applications are easier to install.
• Easier updates
After the .NET Framework is installed, it is updated automatically by the Microsoft Update service. If you receive Automatic Updates through Control Panel, any versions of the .NET Framework that are installed on the computer will always be up to date with the latest service packs.
There's three important links at the bottom. General Info, Downloading the packages, and how to determine which versions of the .NET Framework are installed and whether service packs have been applied.
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