As mentioned, there is an appeal thread at immi. ca that has some good information in it. You might also be interested in reading the following:
Appelant's Guide to Alternative Dispute ResolutionMost appeals are given an opportunity to resolve through the ADR process - but some refusals, based on the reason, have to go to a full oral hearing. The ADR process is like a mediation, where they try to "settle" the issues without having to go to court . . . whereas a oral hearing is comparable to a normal court case/appearance.