"As instructed I ran the CD first, then shut the PC down and installed the pci adapter."
But to install a PCI card, like almost all types of hardware, you would fit the card and boot the PC - nothing else. That's how the New Hardware wizard will be triggered. Very rarely do you ever have to install the driver first - those days are long gone - and you certainly never need to do so for a PCI LAN card.
Please ensure that you do not install any management software, which I suspect you may have already done, so remove the software and the adapter (not physically, of course) and start again. Only use the CD to provide the driver.