Already explained so many times...............Anyway I will explain again.
Hardware you need.
1) Cross climped LAN wire
2) LAN card on both PC.
Steps:
1) Connect the two PC using the LAN wire.
2)On any one of the PC
Start-->>control panel-->>Network connections
you will find Local Area Connection
3) Right click on my "local area connection"-->>properties-->>TCP/IP
5)Double click internet protocol (TCP/IP)
6) Make setting as shown below.
In another system ....just change the IP address to 192.168.1.3
and let other setting be the same.
In DNS server address you can enter any thing but should be same.I am using airtel broadband,so I have entered airtel server address.You can enter your own ISP server address..n thus you can share internet also.
For sharing file you need to run "Network Setup wizard".
Start-->>control panel-->>Network setup wizard.
Click next.
Click next
select 1 st option and click next.
Like this follow the instruction.
Run the "Network setup wizard " on your second PC also.Restart both computer.DoneNow you can share data between both PCs.