I'll post up some stuff beforehand, but basically it's as follows.
We do a live online snake draft, usually takes about an hour and half, using the Yahoo tool. (Go and 'test your system' beforehand). Basically in the draft you have required rosters to fill, and when they are filled you can populate your bench with any combination of the starting positions.
There are numerous draft kits and packs that help in your draft, and if you think you won't make it, you can pre-rank the players in order of who you think are the best. Each time your turn comes around the computer will pick the highest available ranked player, pending roster spot completion. e.g. if you have one pick left, and have not picked a kicker, the computer will get you the highest ranked kicker you have left, even if he's not the highest overall left.