PDF optimized for SONY Readers

I just downloaded Calvin's Institutes on PDF and I am very pleased with the appearance of the PDF on my laptop. However, because the PDF uses a page-size of 8.5x11", each page gets scrunched to unreability on the SONY's 3.57" x 4.82" screen. I'm hoping for some means of remaking the PDF optimized for the SONY Reader devices. I've managed to convert several RTFs to a form that looks almost as good as purchased books on the device. I'm volunteering to do the work of creating the PDFs if you can provide the texts in some word-processor friendly format, e.g. RTF, DOC, DOCX. I see the Institutes's markups were performed by Jon Van Hofwegen, if y'all can put me in touch with him, or get me the files he used for markups, I'd be much obliged.

Cordially,

steve