started the car up about an hour ago and it was making a strange whining noise from under the bonnet that becomes louder and higher when pressing the acelerator. I stopped a short while later to see if I could locate the problem but, due to the fact I really no nothing about engines, all I could work out was that the sound is coming from behind the main engine block and to the left near the cam belt area?? I'm really worried about as there are no warning lights on on the dash? Any help appreciated greatly. Should I stop driving it?