.NET Framework version 1.1 for 64-bit operating systems

[Q] How to install .NET Framework version 1.1 for 64-bit operating systems?
[try]
To install .NET Framework 1.1,

• visit Windows Update and select the .NET Framework 1.1 package
  or
• see "Microsoft .NET Framework Version 1.1 Redistributable Package" at the Microsoft Download Center by  http://go.microsoft.com/fwlink/?LinkId=17153.

To install .net1.1sp1,

• visit Windows Update
  or
• see "Microsoft .NET Framework 1.1 Service Pack 1" at the Microsoft Download Center by http://go.microsoft.com/fwlink/?LinkId=39058.

[ref]
http://technet.microsoft.com/en-us/library/cc785813(WS.10).aspx