find the ip address you are connected to first and see if you can log into the router.
get to your C:\ prompt (if in vista just type "cmd" in the start search)
type in "ipconfig /all"
you should see a whole list of junk, scroll up to the top and look for "default gateway" that will be the ip address for the wi-fi modem. type that address in your browser and if there is no user/pass setup you can get started easily. If there is you might have some trouble getting into the router without it

For directions by router and program visit

http://www.portforward.com

sounds like the people supplying your wireless is blocking the port for utorrent. change the port and use a proxy to bypass this.