Cannot connect to school wireless network

I'm at the University of Florida and I use a Macbook (OSX 10.4.11). This morning I cannot connect to the university's wireless internet. It's an unsecure network. Usually, I'm redirected to a login page, but this morning I am not. Internet connect tells me that I'm connected to the network, but not the internet. I've tried deleting the network config plist and restarting my computer. Does anyone else have any ideas? Thanks!