Template Variable with sub values

I looking for a simple solution for a client to the following problem, and was wondering your opinions on how best to approach it, this is the outlined scenario:

On some of the content pages the client wants to insert a small Flash file. The flash file (if included will be on the same place in each page so a placeholder is more than feasible) If they decide that a page requires said flash file, they can put a tick in a checkbox, and the flash file will be included, no problem so far. Unfortunately the flash file will need some extra variables (4 or possibly more) passed to it (by using the parameters in the object /embed tag) which will define how it’s displayed.

Is there any way for me to only display these 3 or 4 template variables that define the text output if there is a tick in the "Use Flash File" box? I really don’t want to confuse them more than they are already, in fact I think a simple "Good Morning, how are you today", is sometimes a little OTT.

Thanks for any help,
Taff