[Wine] HTML rendering is currently disabled (Wanna' play GUNZ!)

[Jeiji]

Okay, I'm a super super-dee-duper newbster. Aaaaand I'm on a MacBook. Aaaaand I'm running Leopard (10.5.8). So I've used Wine before a loooong time ago for some things, but nothing big. And now I want to play Gunz (from ijji.com). I got everything downloaded (the reactor) and then it tells me something about "Gecko" needing to be installed. I get everything all installed and check "Launch Ijji Reactor" box on the final page of the installer. And then it takes a while, and then a white box pops up with "HTML rendering is currently disabled" written in the middle. I'm discouraged. So I go do some research, but I just don't know enough to wrap my head around it. Got any tips?