Calico, some background on BT to begin with. It is a "piggy backing system" meaning that you'll share with other users whatever you've already downloaded. That is the uploading you'll see, it's simply that another person who is on the torrent is farther behind then you and is grabbing some of what you've already downloaded.
Share rating? What;'s that?
This is a ratio of how much you've downloaded versus how much you've uploaded to other users. As you download a torrent a smaller portion is also being uploaded to other users, in general people consider it very nice if you let your torrent run until the share ratio is 2:1 3:1 in terms of uploads:downloads, meaning that even though you've downloaded the whole show you leave your window open so that others may download it off of you.
What's the deal with upload speed?
Depending on your connection you can fine tune this so it doesn't make your system unusable. At default it will use as much of your upload bandwidth as it can get, making web surfing/etc a real pain, I usually leave it at around 15k-20k as I have a 40k max upstream.
Gladly walk you through whatever I can Chuck, just post here...
Zone Alarm won't have any issues provided you clicked "Yes" for it to run previously.