private SQLDMO.ApplicationClass oSQLApp;
private SQLDMO.NameList oNames;
oSQLApp = new SQLDMO.ApplicationClass();
oNames = oSQLApp.Application.ListAvailableSQLServers();
comboBoxServerSQL.Items.Clear();
for (int i=1; i<= oNames.Count; i++)
{
comboBoxServerSQL.Items.Add(oNames.Item(i));
}