1. From today's giveawayofhteday: Foxonic Professional 3.2
"Foxonic is a powerful and easy-to-use PDF tool. With Foxonic, you can convert TIFF to PDF, JPEG to PDF, BMP to PDF, GIF to PDF and PNG to PDF. You can also merge PDF, split PDF, extract PDF pages, and add watermarks, add page numbers, add/change/remove PDF password/permissions and insert URL linking to the PDF file."
2. Always free for non commercial usage is Cute PDF from http://www.cutepdf.com/
This installs itself as a printer so you can create a PDF file from any document just by printing it.
CutePDF works on both 32bit and 64bit systems and it supportd Vista.
Note CutePDF requires the download of the Ghostscript Postscript ->PDF converter.
It does this automatically as part of the installation if you allow it. It is a safe download.