quite a bit, too much to summarize here

WindowsFormsApplication2/Form3.cs

@@ -0,0 +1,47 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Windows.Forms;
+
+namespace JellyfinRPC
+{
+    public partial class Form3 : Form
+    {
+        public Form3()
+        {
+            InitializeComponent();
+        }
+
+        private void label1_Click(object sender, EventArgs e)
+        {
+
+        }
+
+        private void button2_Click(object sender, EventArgs e)
+        {
+            this.DialogResult = DialogResult.Cancel;
+            Close();
+        }
+
+        private void button1_Click(object sender, EventArgs e)
+        {
+            button3.PerformClick();
+            this.DialogResult = DialogResult.OK;
+            Close();
+        }
+
+        private void Form3_Load(object sender, EventArgs e)
+        {
+            textBox1.Text = ConfigManager.GetEntry("DiscordClientID");
+        }
+
+        private void button3_Click(object sender, EventArgs e)
+        {
+            ConfigManager.SetEntry("DiscordClientID", textBox1.Text);
+        }
+    }
+}