diff --git a/source/dnetd/dconnection.d b/source/dnetd/dconnection.d
index 47e0eac..04a6078 100644
--- a/source/dnetd/dconnection.d
+++ b/source/dnetd/dconnection.d
@@ -55,6 +55,7 @@ public class DConnection : Thread
 		GET_USER_PROP,
 		SET_USER_PROP,
 		DELETE_USER_PROP,
+		IS_USER_PROP,
 
 
 		UNKNOWN
@@ -318,6 +319,11 @@ public class DConnection : Thread
 		{
 			command = Command.DELETE_USER_PROP;
 		}
+		else if(commandByte == 19)
+		{
+			command = Command.IS_USER_PROP;
+		}
+		
 		
 		
 		
@@ -742,13 +748,55 @@ public class DConnection : Thread
 		/* If `set_user_prop` (requires: authed, client) */
 		else if(command == Command.SET_USER_PROP && hasAuthed && connType == ConnectionType.CLIENT)
 		{
+			/* Get the <user>,<propertyName>,<propertyValue> */
+			string[] dataLine = split(cast(string)message.data[1..message.data.length],",");
 
+			/* Get the username */
+			string username = dataLine[0];
+
+			/* Get the property */
+			string propertyName = dataLine[1];
+
+			/* Get the property value */
+			string propertyValue = dataLine[2];
+
+			/* Determine if it is a valid property */
+			bool status = server.isProperty(username, propertyName);
+
+			/* Encode the status */
+			reply ~= [status];
+
+			/* Encode the property value if one exists */
+			if(status)
+			{
+				/* Set the property value */
+				server.setProperty(username, propertyName, propertyValue);
+			}
 		}
 		/* If `delete_user_prop` (requires: authed, client) */
 		else if(command == Command.DELETE_USER_PROP && hasAuthed && connType == ConnectionType.CLIENT)
 		{
 
 		}
+		/* If `is_user_prop` (requires: authed, client) */
+		else if(command == Command.IS_USER_PROP && hasAuthed && connType == ConnectionType.CLIENT)
+		{
+			/* Get the <user>,<propertyName> */
+			string[] dataLine = split(cast(string)message.data[1..message.data.length],",");
+
+			/* Get the username */
+			string username = dataLine[0];
+
+			/* Get the proerty */
+			string propertyName = dataLine[1];
+
+			/* Determine if it is a valid property */
+			bool status = server.isProperty(username, propertyName);
+
+			/* Encode the status */
+			reply ~= [true];
+			reply ~= [status];
+		}
 		
 
 
diff --git a/source/dnetd/dserver.d b/source/dnetd/dserver.d
index c695d15..fb3945b 100644
--- a/source/dnetd/dserver.d
+++ b/source/dnetd/dserver.d
@@ -430,6 +430,33 @@ public class DServer : Thread
 		return propertyValue;
 	}
 
+	/**
+	* Set the property of the given user to the given value
+	*/
+	public void setProperty(string username, string propertyName, string propertyValue)
+	{
+		/* Lock the connections list */
+		connectionLock.lock();
+
+		/* The matching connection */
+		DConnection matchedConnection;
+
+		/* Find the connection */
+		foreach(DConnection connection; connectionQueue)
+		{
+			if(cmp(connection.getUsername(), username) == 0)
+			{
+				matchedConnection = connection;
+				break;
+			}
+		}
+
+		/* Unlock the connections list */
+		connectionLock.unlock();
+
+		/* Set the property's value of the user */
+		matchedConnection.setProperty(propertyName, propertyValue);
+	}
 	
 
 	public string getServerInfo()