Most knitters have a preferred method of casting on. I personally like to do a long-tail cast on whenever possible. I've seen many patterns that call for a cable cast-on but I could never really get the hang of it. Ok, I'll be honest - I didn't really give it much of a chance until now.
I found a pretty detailed picture tutorial that explains how to do a cable cast-on a little better than I've seen it in the past. You can find it at The Making Spot here.