this may help in creating console applications, to test few things before putting in plugin or nay type of interface dlls.
just to test we can create a console application and try the scenarios as possible.
to do so we can create the service object of "OrganizationServiceProxy" as follows
add the corresponding the namespaces...
ClientCredentials creds = new ClientCredentials();
creds.UserName.UserName = "<username>";
creds.UserName.Password = "<password>";
IOrganizationService service = new OrganizationServiceProxy(new Uri("http://<serverName>:<portNumber>/<orgName>/XRMServices/2011/Organization.svc"), null, creds, null);
then u can use the service object to execute,create,update or delete functions.