Affiliate Marketing Secrets

I’m looking for something that can take multiple JPGs (scans of individual pages from my vacation souvenir booklets) and make PDFs from them. There is software that will do this in Linux, which I also have installed, but right now I’m looking specifically for something that will work in Windows XP. And it would be really good if it was free.
I’ve checked download.com and done a couple of searches but have come up dry. I’m finding lots of stuff that will print to PDF, but that won’t help; I don’t want to have to import those JPGs into a word processor and then resize them to fit the page before I can print them. I’ve tried that and it’s a real pain. I think Acrobat will do this (or at least it will with TIFFs because I used to use it at a temp job), but I’m looking for something cheaper. Does anyone have any suggestions?
One last thing: Please, NO AFFILIATE LINKS. I *will* report them – to Yahoo and to the vendor you’re representing (and yes, I can tell – even if they’re disguised). Sorry to make such a fuss, but I seriously hate spam.