A few things before we should answer him:

1. An internal or external modem?
2. USB, PCI, or ISA slot modem?
3. dialup (ie 56k) or ISDN?
4. Do you have a windows partition as well as fc1, or is it only fc1?
5. What is the make of the dlink modem? (such dlink DFM560 voice fax)