No personal experience but others who have dogs with epilepsy have recommended these two sites as helpful:
http://www.canine-epilepsy.com/Resources.html
http://www.canine-epilepsy.net/basics/basics_index.html
I am a little surprized that you haven't mentioned anything about your dog being prescribed medication for his seizures. Is there something in his bloodwork (or an MRI) leading your Vet to think the seizures are non-epileptic in origin ?