I don't like ventrillo due to license issues and lack of os x/linux client (ts has no offical os x client, but a nice third party one)
http://www.ventrilo.com/download.phpTekieb == pwnt
Ok, half pwnt, the linux client is still in development.
Xiphias, you will find (as we've experienced in the past) that people will not be signed up for tournaments until a few weeks before the LAN. I guess people are just generally procrastinators, or they aren't regulars on the site, signup, and then forget about us until the LAN, so they've missed the announcements that ALP was available and ready to be utilized. As you can see, only 26 people are registered in ALP, and we currently have 100+ signed up for the LAN (91 paid). Give it time, the interest will be there.
BTW, not trying to sound like I'm knocking CoD2, just wanted to point out historical trends from previous LANs.