I need some advice on how to properly take care of my mbp when connected to an external display. I have a VGA 17" Dell LCD that i use for extra screen real estate. 1. Is it ok to use both for extended periods of time? 2. When i want to just use the laptop can i just shut the monitor off and leave it connected? 3. When should i connect/disconnect the monitor(while the macbook pro is shutdown? Sleeping?) 4. Any additional precautions i should take? Sorry if this seems overy concerned I just want to make sure my MBP doesnt suffer any harm because of something i really dont need. TIA.