Looks like a good candidate for editing PDFs. From the website...

The <img src=/S/free.gif border=0 alt=free width=30 height=15> PDF-XChange Viewer offers all the feature's you would expect such as support of all PDF file formats from Version 1.0 all the way to the latest 1.7 (Acrobat 8)

You might be surprised just how quickly your large PDF files open and pages smoothly refresh as they are scrolled.
So, why not speed up and improve your PDF Viewing experience by downloading the free PDF-XChange Viewer now!
In addition to all the standard features here are some of the features available in the PDF-XChange FREE Viewer

o Add Comments and Annotations to any PDF file (subject to security settings) - unlilke the Adobe Viewer which requires the PDF creation tool to be 'certified' by Adobe !
o Markup pages with text and objects
o Type directly on any PDF page, not just Adobe enabled forms documents - in Typewriter mode.
o Export PDF pages or entire files to any one of the supported Image formats including BMP, JPEG, TIFF, PNG and many more ...
o Extract text from a PDF page/File
o Make your navigation of large or complex PDF files both simple and enjoyable swith the extended functionality of our 'Loupe' and the 'Pan' Window tools
o Fill and Save Adobe Forms to disk, email or 'post' !
o Full Javascript Engine included
o Updated JPEG2000 Compression support - improving speed.
o And many more features such as Rotate and 'Save', Email files etc ...