wireless
You need an Ethernet hub. Connect your modem and both computers to the hub, and both of your computers will have a connection available. The OS's only affect the connection settings on each computer.
To form a network from two computers is enough a crossover cable. For more than two computers, a hub or switch is necessary.For example you can use a router like a D-LINK together with an Ethernet cable depending on your choice
Two computers
Either through the use of switch, hub, or an access point for wireless communications.
I believe that it is possible to connect to computers to one monitor. I have worked with brand new LCD monitors with two inputs - one DVI and one VGA. The monitor auto-senses which port is being used. So in theory, use the auto detect button on the front of the LCD panel to switch between computers.
A hub or switch must be used to connect 3 PCs together. Two PCs can be connected using a single crossover cable.
One Answer:It is possible to connect two computers without using a hub by using a switch instead. A switch is better than a hub because it creates a collision domain (CD) and stops them from happening when two devices try and send frames at the same time. Rather than buying a cross-over cable to connect two computers together, you can use two straight-through cables (your average, everyday network cable) and connect them to a switch. This also allows for growth where you can add more computers to the switch if the network grows.Another Answer:With Ethernet, you can use a crossover cable to connect two computers without using a hub, switch, or existing network. Crossover cables are Ethernet cables that have the send and receive wires (pins) switched along the length of the cable. The pins that send information from one computer are connected to the pins that receive information for the second computer. You can use a regular cable if they are modern computers.
a cord
Go wireless. Or, the cheapest way is to get a simple hub (~$20), connect your PC's and share your apps. Presuming you are using an Ethernet NIC in each system, you cannot connect three computers with CAT5 cabling without a hub or multiple NICs. The various twisted-pair-based Ethernet standards (10BaseT, 100BaseTX, etc.) do NOT allow for more than two devices on a single physical network line, so there is no way to have three computers communicate along a single wire. Token Ring technology and the old 10Base5 (thinnet) or 10Base2 (thicknet) Ethernet standards were designed for multiple systems on a single physical connection.
A collision occurs.
You can buy a firewire cord. That is the fastest and easiest way to connect two computers.
I have a PC, laptop and xbox running and i have a modem and router downstairs with a wire leading upstairs then a netgear high speed hub splitting my connection 3 ways to my PC etc , but i don't think u need a hub if your router has multiple ethernet slots.