Thanks, for this tip, I will try this out sorry about the delay in replying I've had a hardware failure on my machine which I've traced down to a PCI Firewire card. This may have been instrumental in some of the BSoD's I had bee encountering. My Studio machine is down while I try and source a PCI-E equivalent replacement. I also wanted to say thank you so much for all the help you gave me you are an absolute star.