Got my mini-DisplayPort Cable!

I ordered a mini-DisplayPort cable this weekend.  The idea was to be able to use my iMac screen as additional screen real estate, so that I can game on a big screen (like 17" isn't enough...it's plenty but more is always better).

So, the cable arrived today.

Results:

All I need to figure out now is to how to configure BF3 sound to be heard in the headset (vs the iMac speakers).  Also, there's an issue where game sounds (on the iMac) lower or mute...the OS is apparently turning down the sound automatically.  It wasn't doing this when playing BF3 through the M17x audio and display.  I'll figure it out later.

Also, as a note, only the mini-DisplayPort cable will work (or a DisplayPort cable with mini DisplayPort adapters).  The main cable has to be DisplayPort...HDMI will not work.  This solution will also not work for Thunderbolt Macs.  My iMac is pre-Thunderbolt.

I'll be going to OBX for vacation next week.  I plan to take the M17x so I can occasionally play BF3 or other Origin/Steam games.  We'll see how that goes, especially since I don't know what type of internet connectivity we'll be provided.