Is there a way to skip individual file compression? If not, consider this an enhancement request.

I am building a script that calls/runs an Installshield package. It's delivered by another organization who will not repackage in SB5 nor will they release the files/script to me for conversion (Not like I would want to). It's already compressed by Installshield. Although (I think I want to) include the IS package in my SB5 package, I don't think it's necessary to compress this large file again. I'd just like to suck it in.

By the same token, how are native zip or (unix) compressed files handled?