If you haven't opened the Setup.exe installer and installed the updater, go ahead and do that. If you've already done it, you don't need to do it again.
To open the updater after it's been installed:
- Click the Start button, then point to All Programs.
- Point to iPod and click iPod Updater 2004-07-15.
You can also find the update in this path:
C:\\Program Files\\iPod\\iPod Update 2004-07-15\\