I’m having trouble using Comic Zeal and WiFi Sync, is there an easier way?

You should definitely use iTunes file sharing if you can.

If you have an older device you can set up an Ad-Hoc network, Comic Zeal will communicate directly to your computer without going through a router or any other devices on your network. The wonderful people at GoodiWare (creators of iPhone Explorer) have set up a guide on how to do it. You can read it here: GoodiWare Ad-Hoc Guide