How To Share Network between two or more computer

First:
a regular network cable will not work. You need what's called a "reversing" or "cross-over" network cable. The problem is that a regular cable will connect the transmitter of computer A to the transmitter of computer B, and the receiver to the receiver. What you want is the "reverse" - you want the transmitter of one computer connected to the receiver of another. (Hubs, routers, and the like know to listen to the transmitter, and send to the receiver - so "normal" cables work just great when you're connecting to those.)

Second:
you may need to install an additional network protocol. If all you're doing is connecting two computers, you may need to install either the IPX or NetBEUI protocols. It's more complicated than is necessary to get into here, but these protocols allow computers to identify themselves, rather than relying on some other device to assign them an address. In this case things that rely on TCP/IP will not work. However, if you use Internet Connection Sharing on one of the computers to share a connection, then TCP/IP, and all the tools that rely on it, will work and no additional protocols will be required


Connect two computers using router:

1.Plug in your cable or DSL modem and connect it to the cable system or the phone line with DSL. Specific instructions for this are provided by the cable company or your DSL provider, if they don't actually do the installation for you.

2:Connect the cable/DSL modem to the wide area network (WAN) port of your router with the cable provided. If none was provided, a standard CAT5 cable should be fine.

3.Power up the router and wait for all the diagnostic lights to settle down.

4.Connect your computers to the LAN ports on the router using standard CAT5 network patch cables.

5.Power up or restart your computers.

6.If your router includes a wireless access point and you're connecting some of your computers using wireless, you'll need to configure the wireless connections now.