AKAWN

For anyone finding the post while searching for old Feature Packs / Service Packs because the need a specific version of SQL Server Native Client Tools (sqlncli.msi / sqlncli_x64.msi).

If you can get hold on the Service Pack that was release at the same time as the Feature Pack you are looking for, you can extract it.

Put the ServicePack.exe on you disk. E.g. C:\Temp\SQL\en_sql_server_2005_service_pack_4_x86.exe

Start a command prompt and run the following:
cd c:\temp\sql
en_sql_server_2005_service_pack_4_x86.exe /extract:”c:\temp\sql\extract”
Click OK to the window that pops up and wait for the extraction
When done browse into
c:\temp\sql\extract\hotfixsqlncli for the x86 file
and
c:\temp\sql\extract\hotfixsqlncli_x64 for the x64 file

I can see that all service packs does it a bit different across all the different releases.

Here is a powershell script to search for all sqlncli.msi files when done extracting.

Get-ChildItem -Path ‘C:\Temp\SQL\’ -Filter “sqlncli.msi” -Recurse

Best advice is to extract the x86 version of a Service Pack, because it contains both the x64 and x86 files