diff --git a/src/gmc_con.erl b/src/gmc_con.erl
index da15d6e..1b74c10 100644
--- a/src/gmc_con.erl
+++ b/src/gmc_con.erl
@@ -12,7 +12,7 @@
 
 -behavior(gen_server).
 -export([show_ui/1,
-         open_wallet/2, close_wallet/0, password/2,
+         open_wallet/2, close_wallet/0, password/2, refresh/0,
          nonce/1, spend/2, chain/1, grids/1,
          make_key/6, recover_key/1, mnemonic/1, rename_key/2, drop_key/1,
          add_node/1, set_sole_node/1]).
@@ -80,13 +80,19 @@ password(Old, New) ->
     gen_server:cast(?MODULE, {password, Old, New}).
 
 
+-spec refresh() -> ok.
+
+refresh() ->
+    gen_server:cast(?MODULE, refresh).
+
+
 -spec nonce(ID) -> {ok, Nonce} | {error, Reason}
     when ID     :: clutch:id(),
          Nonce  :: integer(),
          Reason :: term(). % FIXME
-% FIXME
 
-nonce(_) -> {ok, 42}.
+nonce(ID) ->
+    gen_server:call(?MODULE, {nonce, ID}).
 
 
 -spec spend(KeyID, TX) -> ok
@@ -253,6 +259,9 @@ read_prefs() ->
 %% The gen_server:handle_call/3 callback.
 %% See: http://erlang.org/doc/man/gen_server.html#Module:handle_call-3
 
+handle_call({nonce, ID}, _, State) ->
+    Response = do_nonce(ID),
+    {reply, Response, State};
 handle_call({save, Prefs}, _, State) ->
     Response = do_save(State#s{prefs = Prefs}),
     {reply, Response, State};
@@ -284,6 +293,9 @@ handle_cast({open_wallet, Path, Phrase}, State) ->
 handle_cast({password, Old, New}, State) ->
     NewState = do_password(Old, New, State),
     {noreply, NewState};
+handle_cast(refresh, State) ->
+    NewState = do_refresh(State),
+    {noreply, NewState};
 handle_cast({spend, KeyID, TX}, State) ->
     ok = do_spend(KeyID, TX, State),
     {noreply, State};
@@ -525,12 +537,50 @@ do_add_node(New, State) ->
 % FIXME: This will, of course, totally explode if anything goes wrong
 do_set_sole_node(TOTN = #node{external = none}, State) ->
     do_set_sole_node(TOTN#node{external = 3013}, State);
-do_set_sole_node(#node{ip = Address, external = Port}, State) ->
-    ok = hz:chain_nodes([{Address, Port}]),
-    {ok, Status = #{"network_id" := NetworkID}}  = hz:status(),
-    ok = hz:network_id(NetworkID),
-    tell("Status: ~p", [Status]),
-    State.
+do_set_sole_node(New, State = #s{wallet = W}) ->
+    ChainID = ensure_hz_set(New),
+    Net = #net{id = ChainID, chains = [#chain{id = ChainID, nodes = [New]}]},
+    NewWallet = W#wallet{chain_id = ChainID, endpoint = New, nets = [Net]},
+    NewState = State#s{wallet = NewWallet},
+    do_refresh(NewState).
+
+
+do_refresh(State = #s{wallet = W = #wallet{poas = POAs, endpoint = Node}}) ->
+    ChainID = ensure_hz_set(Node),
+    CheckBalance =
+        fun(This = #poa{id = ID}) ->
+            Pucks =
+                case hz:acc(ID) of
+                    {ok, #{"balance" := P}}      -> P;
+                    {error, "Account not found"} -> 0
+                end,
+            Dist = [{ChainID, Pucks}],
+            Gaju = #balance{coin = "gaju", total = Pucks, dist = Dist},
+            This#poa{balances = [Gaju]}
+        end,
+    NewPOAs = lists:map(CheckBalance, POAs),
+    ok = gmc_gui:show(NewPOAs),
+    NewW = W#wallet{chain_id = ChainID, poas = NewPOAs},
+    State#s{wallet = NewW}.
+
+
+ensure_hz_set(Node = #node{ip = IP, external = Port}) ->
+    case hz:status() of
+        {ok, #{"network_id" := ChainID}} ->
+            list_to_binary(ChainID);
+        {error, no_nodes} ->
+            ok = hz:chain_nodes([{IP, Port}]),
+            {ok, #{"network_id" := C}}  = hz:status(),
+            ChainID = list_to_binary(C),
+            ok = hz:network_id(ChainID),
+            ok = gmc_gui:chain(ChainID, Node),
+            ChainID
+    end.
+
+
+%ensure_connected(ChainID, IP, Port) ->
+%    ok = hz:chain_nodes([{IP, Port}]),
+%    ok = hz:network_id(ChainID).
 
 
 encrypt(Pass, Binary) ->
@@ -599,6 +649,7 @@ do_password(Old, New, State = #s{wallet = #wallet{pass = Pass}}) ->
 
 
 do_spend(KeyID, TX, State = #s{wallet = #wallet{keys = Keys}}) ->
+    tell("SpendTX: ~p", [TX]),
     case lists:keyfind(KeyID, #key.id, Keys) of
         #key{pair = #{secret := PrivKey}} ->
             do_spend2(PrivKey, TX, State);
@@ -649,7 +700,13 @@ do_spend2(PrivKey,
          {transaction, NetworkTX}],
     SignedTX = aeser_chain_objects:serialize(SigTxType, SigTxVsn, SigTemplate, TX_Data),
     Encoded = aeser_api_encoder:encode(transaction, SignedTX),
-    tell("SpendTX: ~p", [Encoded]).
+    tell("SpendTX: ~p", [Encoded]),
+    Outcome = hz:post_tx(Encoded),
+    tell("Outcome: ~p", [Outcome]).
+
+
+do_nonce(ID) ->
+    hz:next_nonce(ID).
 
 
 do_save(Label, Pref, State = #s{prefs = Prefs}) ->
diff --git a/src/gmc_gui.erl b/src/gmc_gui.erl
index 6e3e3e2..f2a7b30 100644
--- a/src/gmc_gui.erl
+++ b/src/gmc_gui.erl
@@ -301,6 +301,7 @@ handle_event(#wx{event = #wxCommand{type = command_button_clicked},
             #w{name = www}      -> www(State);
             #w{name = send}     -> spend(State);
             #w{name = grids}    -> grids_dialogue(State);
+            #w{name = refresh}  -> refresh(State);
             #w{name = Name}     -> handle_button(Name, State);
             false               -> State
         end,
@@ -344,6 +345,11 @@ terminate(Reason, State) ->
 
 %%% Doers
 
+refresh(State) ->
+    ok = gmc_con:refresh(),
+    State.
+
+
 netman(State) ->
     ok = gmc_con:show_ui(gmc_v_netman),
     State.