Explain Time Zone Support?

Time zone support boggles me and I think Apple's approach is counter-intuitive for that. It shouldn't be so hard.

I make my appointments in MST zone while I work in CST. Calendar (computer) is set to CST also. I travel to MST and find my appointments all shifted up one hour both on my computer and my iPhone. Time zone support is turned off. So just now I changed my computer's time zone in Calendar back to CST and that fixed my problem on the computer. Will that also fix the phone? Will I be seeing CST instead of MST?

I want my appointments to be for the time I entered them into Calendar. I shouldn't have to do anything to make that be the case (in my mind).

Thanks.