Hi Everyone!
I have a five month old bichon/cavalier who is having a lot of trouble getting housetrained. He goes where he wants when he wants. All my efforts to house train him have failed. I just came across an article on the internet http://www.dogdaysusa.com/behaviorcenter housetraining.asp and I think it might work. The question I have is even though he is not housetrained he is five months old and can hold his bladder for over four hours. Taking him out every hour seems pointless as I don't think he will understand what he is supposed to do? Any suggestions on how to modify this and still teach him the basic concept of housetraining? Any other housetraining tips will also be appreciated.
Taking him out every hour seems pointless as I don't think he will understand what he is supposed to do?

It's not pointless. And it's not really that he knows he's supposed to "do" anything at this point, it's that when he does "do" something, he's outside when he does it and not inside.
It's called classical conditioning, and it's what house training is all about.
Currently your dog has classically conditioned himself to "going" inside, not outside.
So, you just can't allow him to "go" inside. Not even one more time. Make sure you've cleaned up all of his "old" spots with an enzyme cleaner (it will help to erase his current conditioning to "going" inside) and just don't let him "go" inside again.
If you do, you're basically back to square one.
Good luck!

Handsome Jack Morrison
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So, you just can't allow him to "go" inside. Not even one more time. Make sure you've cleaned up all ... cleaner (it will help to erase his current conditioning to "going" inside) and just don't let him "go" inside again.

Adding to Jack's advice, tethering him to you while you are training him is a wonderful help. You can't control what he does if you can't supervise him 100% of the time.
When you take him outside, take him on a leash to the place where you want him to potty. Do not just let him out and hope for the best.

As soon as he does go, praise him and treat him. The next time you take him out, take him to the same spot.
So, you just can't allow him to "go" inside. Not ... "going" inside) and just don't let him "go" inside again.

Adding to Jack's advice, tethering him to you while you are training him is a wonderful help. You can't control what he does if you can't supervise him 100% of the time.

And adding to both of the above, if you're doing something where he can't be tethered, put him in a crate. You can make the crate a positive place to be by feeding him there, and rewarding him for going in there. Gradually increase the time you leave him there from a few seconds to a few minutes to an hour or two. Most dogs won't potty in their "cave," especially if he also sleeps there.
If you do catch him in the act, don't punish him, don't hit him, don't rub his nose in it (then or any other time), just say "NO" firmly and pick him up and quickly usher him outside to complete the job. And then praise him effusively. And go back in and clean up the spot with enzyme cleaner.
Watch him carefully. Most dogs will start acting "different" when they need to potty. He may get antsy, or start circling and sniffing... learn to read his signals, and take him out immediately whenever you spot them.
FurPaw
When you take him outside, take him on a leash to the place where you want him to potty. Do ... does go, praise him and treat him. The next time you take him out, take him to the same spot.

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To reply, unleash the dog.
Taking him out every hour seems pointless as I don't think he will understand what he is supposed to do?

And adding to everyone else's advice, when you do see him "go", say the words "go potty" or whatever words you want to use WHILE he is going. Then, he'll associate the words with the action, so when you're taking him out every hour and saying "go potty" he'll understand what that means.

Amy