Boot Camp not burning Windows support DVD
Okay, so I think I figured it out. Apparently it's a problem with Boot Camp 3.0.4 that came with the 1.6.6 update. I found a link to the discussion on Apple's forums and I'll post it as soon as I can use the MacBook again (it's installing Windows right now and I'm typing this on an iPad...).

UPDATE

Here's the link to the Apple forum discussion.