How about a group at this one: Sportsnet Hockey Pick'em I'll make a group for the underground and it might work as well. It involves a little bit more interaction (pick every week, or not) and is a little bit more one sided, since only scoring and shutouts count. Don't want to be competition for the own pool here, but I've joined it for a couple of years now, and I liked it.
They also have a special version for the playoffs; new picks, slightly different rules.

Oh and by the way, even Systine might be able to win a prize here (if he's resided in North America I guess).

Okay, I saw that the page is not totally ready yet, but will be soon I guess. I just entered this year in last years URL and there is some info, but you can't join jet.

I've done the one at Yahoo sports a few times but I always end up losing because I forget about it a few weeks, but maybe that was because I didn't know the other guys at all, which made it less fun. In the end I only came back to use the excellent stats function, to use the stats at SportsNet. But it has a draft and everything. Maybe with a bunch of Undergrounders it could be good fun. Let me know, if enough people want it, I'll create a league!