Start button in Windows, All Programmes, Accessories, system tools, System Information, Components, Ports, Parallel.
There you should find your port and the address.
There may be more than 1 as although your motherboard doesnt seem to have a port on it, it likely does. Most modern motherboards have an IDC header on them that you can connect to for the onboard port.
Anyway as you have a PCI port that is not the one you are wanting so look for another in the list and get its address.
Hood