Help Wifi issues



am new here

I just got a GALAXY S GT-I9000 4 days ago, I was able to connect to the wi-fi at home but when 2 days later I came to the dorm of my university it doens't work anymore it's connected to the wirless but whenever I try to browes a website it says "The page contains too many server redirests" and only connect to,, even when I try opening my email it doesn't work.

the router here is cisco, firmware version 2.1.