instructions for setting up DSL please

Here's the situation. I built a pc for my niece who lives 180 miles from me. Sent it by someone and she can't get her DSL to work. I installed a Linkskey 10/100Mbps PCI Ethernet Card, Model LKF-5100+ and the drivers from the floppy that came with it. The PC has winxp home. She says that the leds on the modem are lit correctly and she has gone through the setup wizard several times to no avail. When loading windows I went ahead and loaded the temp Norton internet protection. What exactly should be done to get this thing to connect?