Yep, Port forward. Very easy to do its worthwhile doing.
Also when you search for your torrent, always sort the results by amount of seeds. Click on the seeds column on your torrent website eg. mininova.org. If there are a tiny amount of seeds then your in for a slow download.
Always read the comments and ratings on a torrent if any.
Also you should try out uTorrent as your bittorrent client. Its a tiny tiny download packed with features, you can even run it off your usb stick at work or school!
I hope i've cleared some things up.