Height is usually fluid on web pages. Variable height containers are normal since content usually dictates height.
Got a link so we can see how things are structured?
I haven't yet uploaded the site. I have a set of containers with varying columns in them. Two of the columns have editable regions in them. I have tried changing the size under BOX and/or POSITION. It appears as though the template is saying that those specific columns have to be the same size for all the pages. If I set it for all the other pages it cuts off the content of the tall page. If I set it on the specific tall page to accommodate the content it adjusts it on all the other pages including the template.
OK I have it partially working. I already have an editable region in one of the two problem columns. I was trying to change the background image in one of them to content that is taller. It seems to work in the column that has the editable region only changed. Can you have two editable regions stacked on one another is a single column?
As John said, we can't begin to guess what you have going on. You'll need to upload your page to a test folder on your remote server and post a URL for us to see.
In a nutshell, height property is a restriction in all browsers except IE. Height values should not be used in content areas that may fluctuate across site pages.
If needed to reveal a backround image, for example, use the min-height property instead of height.
THat seemed to do it, although from what I have read this will not work for the poor souls using IE.
IE7 and 8 support min-height. Earlier versions don't. Workarounds exist for earlier versions but I wouldn't bother.