I don't have my book handy, but if you look at the ADCIN section of the PBP manual, there are several DEFINES you need in order to use the ADCIN command. Also to post code in the cool code box, you need to use tags. Really simple:
[code[ <----should be the other, but then you won't see the tag
All your code here
[/code[ <----Again the second bracket should be } without the shift key.

Maje sense?