you dont tell what type of ip u have static or dyn never mind try this simple thigs maybe its works >
1) clear ur cookies and temp files
2) run > cmd > ipconfig /flushdns
and try to connect if not works try ghost surf program and u will see in this program inside install mirc just install it and work in program ip and port ip is like 127.0.0.1 port 1712 am not sure of the port good luck