scrollbar to tree view widget?

[Chris De Maeyer <chrisdm pandora be>]

how do i connect a vertical scrollbar to a tree view?

got this code already:
store = gtk_tree_store_new (N_COLUMNS,G_TYPE_STRING,G_TYPE_STRING);
FillTree(store);
tree = gtk_tree_view_new_with_model (GTK_TREE_MODEL (store));
g_object_unref (G_OBJECT (store));
        
renderer = gtk_cell_renderer_text_new ();
column = gtk_tree_view_column_new_with_attributes ("Location", renderer,
"text", NAME_COLUMN,NULL);
gtk_tree_view_append_column (GTK_TREE_VIEW (tree), column);
        
column = gtk_tree_view_column_new_with_attributes ("ID", renderer,
"text", ID_COLUMN,NULL);
gtk_tree_view_append_column (GTK_TREE_VIEW (tree), column);
        
adj1 = gtk_adjustment_new (0.0, 0.0, 101.0, 0.1, 1.0, 1.0);
scrollbar = gtk_vscrollbar_new (GTK_ADJUSTMENT (tree));
gtk_range_set_update_policy (GTK_RANGE (scrollbar),
GTK_UPDATE_CONTINUOUS);

Thanks.