You can check this by using the Device Manager. To get to Device Manager:
Under IEEE 1394 Bus host controllers, if it says VIA, you have a VIA chipset.
If your computer has a VIA chipset FireWire connection and a USB 2.0 connection, the USB 2.0 connection may provide a faster throughput for data transfer. You can try the USB 2.0 port if you have one or you can download the most recent iPod software update which addresses this issue.