Well, i was able to access those ports fine with the first computer before the crash. It's the 2nd computer that can't access those ports. So the port forwarding of the router should be configured fine, though it's strange that 192.168.1.1 can't be accessed from the good comp with IE.
Also i checked the Windows XP firewall sometime ago and just checked it again. It's still disabled. Also,, MIRC has no mismatch. Tried //localinfo -u before.