SQL Server 2005 Feature Pack and Downloads

The feature pack is a set of separate downloads that allow you to install components of SQL Server without installing the whole server product.  Available at the following URL:

https://www.microsoft.com/downloads/details.aspx?familyid=D09C1D60-A13C-4479-9B91-9E8B9D835CDC&displaylang=en

Also, SQL Server Service Pack 1 just RTM'd:

https://www.microsoft.com/downloads/details.aspx?FamilyID=cb6c71ea-d649-47ff-9176-e7cac58fd4bc&DisplayLang=en