Wirelessly? Ethernet? USB? Which is easiest to set up? And will speed be an issue? I have the 17" MBP but need more screen real estate. My mom gave me a $300 dell laptop, so I was hoping to be able to make this work and not have t spring for an additional monitor. I've tried SynergyKM and can't seem to make it work. Hardware is not my forte, so please keep it simple. Thanks in advance for any help.