You remember less and less of your dreams as the day goes on. When you first wake up you may remember flashes of it but by supper time they are mostly gone. This is why it's important to keep a notebook and pen by your bed, and why you should write down everything you remember as soon as you wake up.

I think I get this, I dream I've been working on my site coding it and carry on working on it but I'm awake because I can hear people talking then go onto my pc and see its all gone. its horrible.

Yes that happens to me sometimes, and sometimes I remember nothing at all.

I'll take up this idea of yours, see how it goes in terms of remembering. ;)