Microsofft SQL Server management studio express query

ok guys

i have windows vista installed and have installed Visual Studio 2010 and SQL Server Management Studio Express

when i try to start and give the server name as pcname\SQLEXPRESS it returns

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I think it is the version problem of SQL Server

Try Using 2008 version.

for which software visual studio oor sql

Seems like a mismatch between the versions of your server and management studio

Which version of SQL Server Management Studio are you using? You probably can't connect to 2008 server using a 2005 version management studio.

Serever Management Studio version

ok now i tried to install 2008 version but during installation

it says that the windows powershell failed how am i gonna fix this