Hi, I use BitTorrent for downloading various (legit) radio shows, etc. However, I recently encountered an issue that I've so far been unable to resolve. Consequently, I'd really be grateful if anybody here can help. In essence, earlier today I discovered I am listed as not being connectable by the tracker. While this apparently doesn't affect my ability to download torrents (provided there are users available who ARE connectable), it apparently means that I am unable to offer connections to other users. Basically, this means I can download data, but have problems allowing people to re-download that data from me. I'm aware that the correct port needs to be opened in my firewall, which (see attached image), I believe I have done. However, this made no difference. I even tried turning off my firewall but, again, no difference. From what I can gather, some people have encountered the same problem and overcome it by correctly configuring their router. But - here's the thing: I'm not sure exactly what a router is! Am I right in thinking it's a device for splitting your internet signal so that various computers can access it at the same time? If so, I don't have one, so that can't be the issue. However, if the router is something to do with my cable modem, I guess the problem might lie there. (I have a Toshiba cable modem provided by Road Runner, from which the cable goes directly into my iBook.) I've tried searching on Google for any info regarding this, but haven't turned-up much (and what there is just goes over my head!). So, please can anyone out there help and explain things in very simple terms?! If so, many many thanks!