Windows xp-winchat not working

Be advised that Microsoft has discontinued winchat after releasing SP2 for windows xp. and did not bother to make the necessary changes to make it functional to meet users needs. you should try something different third party products most of the are free!
try this one:
http://www.fomine.com/index.html

* check n|w cables are connected properly

* restart your system

* if server is down then check adapter is suppling power to router properly if not replace adapter

Both computors must be connected to the same network{LAN} or Internet as you probably know.Also ,each computor must be running a similar Protocol,such as TCP/IP.Please also recheck the ip address and whether you have not been barred by your destination computor.Regards