I have installed SQL 2005 and SQL 2008 on my computer. I am trying to start an SQL database for the first time. I have installed SQl 2008 R2 when I go to start>>all programs>>MIcrosoft SQL 2008 R2>> Configuraton tools >> SQL Server Installation 64 bit an installation box comes up and I click yes Now I don't know where to go from here. I have tried to load AdventureWorks 2008R2 SR1 from the microsoft website, but I get an error message " A fatal error occured during installation This installer is only compatible with SQL server 2008 R2 ( Which I thought I installed on my computer)No such instance was found. Is there anyway to sucessfully install this database package?