Download a file from here & see what speeds you get.
http://www.magnetmix.com/video.shtml

Who is your ISP?

Are you & your brother sharing a connection? You could find out what port number he's using for uTorrent & try using that port for your LW.
Tools > options > advanced > firewall config will take you to the page where you can change LW's listening port. Remember, if you change port numbers, you'll also have to change numbers for any port forwarding that's in place & also ports allowed within your software firewall