Okay, after a little more research around here, I think I've made a connection. The chasis seems to refer to the electronics that control the tube itself. It consists of other parts including the neckboard. By the way, i still have no clue what these are

I guess before i start looking into that, I'll start with simpler questions.
1) What is the metal frame around the tube called and does it make mounting easier?
2) Does this method of mounting save space versus placing the entire (read: Plastic and all) TV into the cabinet?
3) I think I read somewhere that most arcade monitor do not support 800x600. I intend to use other emulators in this cabinet other than MAME. Also, I will be hooking up a Dreamcast in the cabinet. Does this in any way affect whether I should go with a TV or Arcade monitor?
4) If I should go with an arcade monitor, what one or ones should I look for?
Thanks all again! I hope this helps clarify my first post!