SV: You're in the land of network protocols. Examples of network protocols are:
* 100 BaseT * 10 BaseT * Token Ring
Where your 100 => 100 MHz or Mbps and BT => BaseT => Base Ten.
You can purchase interface cards from a variety of sources on the net (www.milestek.com is fairly maroon compliant, which is why I like 'em). In addition to the interface card, each type of point-to-point protocol (PPP) requires different cabling. Your 100BaseT interface card requires a "Category 5 UTP cable" with transmission characteristics up to 100 MHz including 100 Mbps data rates.