I'm awaiting my laptop in the mail to use for my first DAW. First off its a Dell Latitude P4 2.0ghz 512 RAM. Im going to be using a Hercules 16/12 Firewire unit. Im planning on keeping the OS and the software on the drive in it. My main concern is the hard drive i will be using for storing and recording on. Will a USB hard drive be fast enough, or do i need a Firewire hard drive. Thanks.