Siberian Huskies and cats generally do not get along. There are many reasons behind this assessment.
First, the Siberian Husky instinctively has a high prey drive. They will hunt and even stalk something they are interested in. When it comes to cats they generally ignore them, until the cat runs from them. When this occurs it sets off that prey drive I mentioned. Immediatly the husky goes into a different mind frame. The instinct to run down their "prey" takes over.
Secondly, a cat rather than a husky is primarily more meek and less self assured. Most of the time cats that have this sort of attitude are less likely to do well with their husky counterpart.
All is not lost, cat owners and husky lovers! There are proven methods to owning a husky AND a cat. The first thing to do would be assess your cat. What is your cats attitude, how does it react to other dogs, how does it react when being aggrevated? If your cat will stand up for it's self, not be backed down, nip back at you when you aggrevate it, etc., chances are your cat will do fine. Plainly speaking your cat needs umph! It needs a kiss my tail attitude toward another animal. If your cat doesn't pass this test, my recommendation would be to research some other breeds. You could end up with a loss on your hands.
Next, your cat's passed the test! But, that's not all. It takes more than just cat attitude. Now you must ask yourself how much effort and time you are willing to put in to training your husky. Training any puppy takes time. But, you are wanting to accomplish something a bit more time intensive. You must be the one to stick to your guns, no one else can do it for you. If your sure the extra aggravation is worth it then there is one thing you must do. NEVER let the dog chase the cat. That's it. It sounds simple enough but it really isn't. You must stop it every single time it occurs. Your dog must be punished (positively) every single time, he must know you are angry, he must know it's not allowed, these facts must be ingrained into his brain at a core level.
On that note. To all my clients I recommend taking a basic and then an advanced puppy course thru your local PetSmart. The cost is generally around $100 for a 6-8 week session. Obedience classes are really more for the human than the canine. The instructors will teach you how to get your dog to do what you want and they will mostly teach you how to be master. With this breed you must be master and you must always be in charge. No exceptions.