How do I install SQL Server 2008 Express R2 SP1 to an existing R2 Express instance? - Stack Overflow
Process to Downgrade SQL Server 2008 R2 SP2 to SP1 on Windows 2008R2
SQL SERVER installation error for any version 2008 r2 express edition - Database Administrators Stack Exchange
MS SQL Installation
SQL Server 2008R2 Express upgrade to SQL Server 2012 Express - Stack Overflow
Installing MS SQL Server Express on Windows VPS or Server | SolVPS Hosting Blog
Steps to Install SQL Server 2008 Service Pack 1 (SP1)
SQLCoffee - How to install SQL Server 2008 SP2
Where can I download SQL Server 2008 R2 RTM now that SQL Server 2012 has come out and the old links have been redirected?
SQL Server 2008 R2 - Installation step by step - YouTube
ssms - SQL Server 2008 R2 Express: Management Tools Missing from Feature Selection - Stack Overflow
Knowledge Base Solution - How do I determine which version or edition of Microsoft® SQL Server is installed for CCH® ProSystem fx® Engagement or Workpaper Manager?
Full SQL or Express SQL, That is the question… - IMAGINiT Technologies Support Blog
Full SQL or Express SQL, That is the question… - IMAGINiT Technologies Support Blog
SQL Server 2008 R2 Express - Indigo Rose Software Forums
Microsoft® SQL Server® 2008 R2 Service Pack 1 - Download
SQL Server 2008 R2 Express - Indigo Rose Software Forums