Single Camera, or Multiple

Alright, so my previous problem (which is still a problem) has lead me to ask a pretty simple question related to the game I’m working on.

Should I create Multiple Cameras (One for the HUD and One for the game) or just a single Camera that hold everything.

The format of this game is going to be similar to an old game called “Gods of Time”

[img]http://i9.tinypic.com/8er6s8o.jpg[img]

As you can see in the image above, the game was only played in that small square, yet the HUD around it interacted with the game, this is what I was planning on doing, however I’m not sure if I should just draw the game, then everything else ontop of the game, or… how I should go about doing it.

Ideas?

(I understand that this game was done using flash, however this is my example)