Okay, I promise never, ever again to even mention that the site exists, geez. Everybody happy now?
Apparently, the fact that it worked perfectly for me in 2007 was blind luck. 
I'm done here.
To the pp that asked if Disney furnished some kind of transportation guide -- they do, and you should get one in your check-in packet if you're staying onsite. IIRC, it doesn't tell you how long it takes, just how to get there.