I believe you will find your board is a model D865PERL not PEARL. That being said, what operating system are you using? USB 2.0 drivers for Windows XP were incorporated in XP with Service Pack 1. If your operating system disc is Windows XP without a Service Pack you will need to install Service Pack 2 to have USB 2.0 support since Service Pack 1 or 1A are no longer available for download.
If you are using Windows XP, while you have a fresh clean install you should also go ahead and install Service Pack 3.