Unfortunately you have just as much luck winning the lottery as getting the right answer if you don't say what motherboard you have
The parameters entry field is important for old isa based nics that cannot be autodetected. It allows for specifying the ioport and interrupt settings. It is still useful sometimes with pci based network cards for example to specify network speed and duplex mode when autoconfiguration fails. However except for those situations you can leave the parameters field empty.