Sicky, you need to do a bit more reading - and understanding - and a bit less of the scattergun questioning; you are about 50% of all the traffic on Wannabes just now! Go back to the sticky thread at the top and read through all the links carefully. As you come up with a question, look and see if it's already been answered before you post another one. If you do feel you need to ask another question, try and find a thread that already covers the subject you're trying to find out about.
Alternatively, I could just stick all your questions into one thread!
Scroggs