Limewire used to work, now it does not at this University.

Computer
Limewire 2.5.5
Mac G4 733MHz, 1GB Ram OS X.1.5/9.2.2

The Connection
Ethernet IP 10.4.54.49
Hardware Address 00:30:65:ef:b2:82
Router: 10.4.54.1
Subnet Mask: 255.255.254.
Configure using DHCP

Help please, I'm melting!!!!!!