First, I tried to install Season One on this computer (Vista). It didn't work. I got the securRom patch, but that didn't help. (Except now I get the mouse icon turned into a cd-rom before the game crashes - yeehaw).
Then I downloaded Season Two (or the first part of it, 201). Well, it won't work either.
I've tried updating DirectX. I've tried restarting my computer. What else can I do?