I have a whopping 693 programs on my XP development machine. How many do you have?

You can simply find out by creating a C# console application, cutting the following, and hitting F5.

using System;
using System.Collections.Generic;
using Microsoft.Win32;

. . .

static void Main(string[] args)
{
    List<string> programs = GetInstalledPrograms();
    foreach (string program in programs)
    {
        Console.WriteLine(program);
    }
    Console.WriteLine("Total - " + programs.Count.ToString());
    Console.Read();
}

private static List<string> GetInstalledPrograms()
{
    string installKey = @"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall";
    List<string> displayNames = new List<string>();
    string[] subkeyNames = Registry.LocalMachine.OpenSubKey(installKey).GetSubKeyNames();
    foreach (string subkeyName in subkeyNames)
    {
        string displayName = (string)Registry.LocalMachine.OpenSubKey(installKey + "\\" + subkeyName).GetValue("DisplayName");
        if (!string.IsNullOrEmpty(displayName))
        {
            displayName += "\t" + subkeyName;
        }
        else
        {
            displayName = subkeyName;
        }
        displayNames.Add(displayName);
    }
    displayNames.Sort();
    return displayNames;
}