VS 2008 - Configuration Files - Fetch The Connection String From The Data Project?

I ahve a solution with a few dll projects, a winforms testbed and a WCF webservice project. In the data project, I have a base class that does the following:

public class BaseDAO
{
private const string CONNECTION_NAME = "OracleConnectionString";
protected static string GetConnectionString()
{
ConnectionStringSettingsCollection settings =
ConfigurationManager.ConnectionStrings;
string conStr = "";
if (settings != null)
{
foreach(ConnectionStringSettings setting in settings)
{
if (setting.Name == CONNECTION_NAME)
{
conStr = setting.ConnectionString;
}
}
return conStr;
}
else
{
throw new NotImplementedException("The connction string can't be found");
}
}

You might ask, why do I need to loop and check the name against a constant? Well, I have defined the connection string in the service project's web.config, but this above code always find two connection strings, one is a sqlexpress which I guess is a default database of some sort. So, to separate that one against the one I really use, I have to loop through all entries and pick out the one I plan to use. How do I prevent this? Is there a better way to fetch the connection string from the data project?