What is the best, easiest torrent client/program/downloader to use when using someone elses wifi & no router?

I use ares as my default torrent client/downloader cuz it's just 'easy' for me.. i'm not completely computer savy but know enough to get me by.. the dilemma is I'm working off someone elses wifi connection & it's very weak, only about 5.5mbps.. ares for some reason always is 'searching' for users although at times it does show that there are multiple users, however, never connects.. & i mean with SEVERAL torrents! yet it has no problem connecting & downloading it's 'own' ares searches.. i would luv to use a better torrent client, however, since i don't have a router and am using the internal wireless card, i have no 'port' to open on other apps to allow torrents to download.. forgive me if i sound ignorant, as i said, i don't know too much.. basically, i'm looking for any information on the best program to download torrents without a router working off of someone elses wifi that will give me decent results and any specific settings i might have to tweak within that program to help me attain those results... ur replies would be greatly appreciated.. as i said, i use ares cuz i don't need to specify a port & it does everything pretty automated.. thnk you, in advance~