RainMaker,
Check out this site: http://pdf995.com/
I started with the free download, and then purchased the PDF maker - its about $10.
It works as a print driver, so after you load it, you select it as the "printer" when you select to print a file.
It's worked well, never had any problems. You can combine files in one PDF file, probably with the paid version. I use it to send one PDF that contains a report in Word, an associated spreadsheet in Excel, and maybe a Publisher file.
Combining things is easier for the recipient, and if they don't have Word, Excel, Publisher, etc, people usually always have Adobe Acrobat.
There are a lot of other capabilties that I don't use, I'm sure.
Kathleen