hello guyz!! currently, i have this code(C# 2005) below to connect to my SQL 2005 Express edition

Code:
Code:
string sqlConnStr;
sqlConnStr = System.Configuration.COnfigurationSettings.AppSettings["ConnectionString"];
SqlConnection sqlConn = new SqlConnection(sqlConnStr);
slqConn.Open
App.COnfig (excerpt)
Code:
<appSettings>
        <add key="ConnectionString" value="Data SOurce =....." />
</appSettings>
But it seems that the Method is obselete and according to Visual Studio 2005 it has been replaced by System.Configuration! System.Configuration.COnfigurationManager.AppSetting'. My question is how can i enhance it? thanks in advance!!!