1. Install SQL 2008 Management Studio Express

Install Management Express Studio from Microsoft® SQL Server® 2008 Management Studio Express

Install tools only

2. Update the Install with MS SQL Service Pack 3

Immediately run

Windows Button ==> All Program ==> Windows Update

Check for updates

Install the optional update of "Microsoft SQL Server 2008 Service Pack 3 (KB2546951)"

or

Download it for multiple uses from http://www.microsoft.com/en-us/download/details.aspx?id=27594