How to connect two computers using LAN ?
For windows XP users :
Start ->CONTROL PANNEL ->Network Connections
see Local Area Network icon and right click and select properties
go on Internet protocol (TCP/IP) and click on properties button.
Set IP address for both the computers.
Remember they must be unique for both of them.
eg if you choose "192.168.1.1" for your first computer
Then choose "192.168.1.5" for other computer.
Below the IP Address there is box called Subnet Mask,
put 255.255.255.0 in it and click ok.
Follow same steps for other computer
Windows 7 :
Start -->Control Panel -> Network and Internet-->Network and Sharing Centre
Click on Change Adapter Settings
There will be icon of Local Area Networking , right click on it and follow the steps given above for windows XP.