Using College WIFI on my J720 no work - but home WIFI does?!

Okay, in years previous, I've used AOL for HPC on my j720 to connect to the school internet.. I have a good signal on my Wifi bar, my MAC addy is registered with the school, but without connecting through AOL for HPC's IP/TCP, I can't get the internet..
Well, after my family got rid of dialup, we haven't had AOL, so I'm sort of SOL..
Anyone know a solution, some sort of Ipconfig like program or something.. even the tech behind why this is happening might help.
Thanks
Well, after my family got rid of dialup, we haven't had AOL, so I'm sort of SOL..
Anyone know a solution, some sort of Ipconfig like program or something.. even the tech behind why this is happening might help.
Thanks