I don't think so Zeni.
I know for a fact that it's pretty much impossible to do it from the Acrobat Reader (then again I'm not a computer wiz) so I don't know if perhaps there's a trick. I have to put a lot of documents together at work, and I always use the full version of Adobe Acrobat.
Illustrator and Photoshop also allow you to save PDFs, but you can only save one page per file, so I guess those 2 programs are out of the question.
Your only choices left might be spending a couple hundreds on Adobe Acrobat, or downloading the program from ol' dirty Bit Torrent.
I thought so, too, Dan, but I finally found a free program that merges them. It's called PDFill, and from what I saw, it's about the only free-ware available.
It doesn't appear to manipulate PDF files as much as Acrobat will. It does merge them at least, which is a good thing considering I had about 40 individual files to deal with.
Of course, it's probably infected with hordes of spyware and adware.