No experience with the drug directly, but whenever I'm faced with a new drug, I often check out its professional monograph. They can be a dry read, but often give the bare facts of the drug without fluff. Here's a link to the info for Xeloda:
I check all my drugs on that site, because I prefer to read the professional info-- I'm boring like that.
The idea of taking chemo as a pill at home sounds sort of nice though and the side effect profile looks pretty run of the mill. It looks like it can be easily started and stopped.. I'm hoping there are others with direct experience to help your dad make his decision.