Coneverting Oledb Code To Connect To Remote Sqlserver

i have some oledb code made in c#(vs 2005) it is for local msaccess file. i want to conevert the code for sql server where connection string placed in web.config file seperately. please help me.
here is code
 private void buildGrid()
{
string conStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=";
conStr += Server.MapPath("~/common/db/demo.mdb");
System.Data.OleDb.OleDbConnection dbCon = new System.Data.OleDb.OleDbConnection(conStr);
dbCon.Open();

string sql = "SELECT * FROM Posts ORDER BY LastPostDate DESC";
System.Data.OleDb.OleDbDataAdapter dbAdapter = new System.Data.OleDb.OleDbDataAdapter(sql, dbCon);
DataSet ds = new DataSet();
dbAdapter.Fill(ds);
ds.Tables[0].TableName = "Inbox";

Grid1.DataSource = ds;
}


 

 

please healp me..