You may want to examine the URL's listed below:
http://www.microsoft.com/downloads/en/details.aspx?FamilyID=0fd439d7-4bff-4df7-a52f-9a1be8725591
For better, quicker answers on T-SQL questions, click on the following...
http://www.sqlservercentral.com/articles/Best+Practices/61537/
For better answers on performance questions, click on the following...
http://www.sqlservercentral.com/articles/SQLServerCentral/66909/