font size rescaling doesn't
I'm a brand new user of Calibre, so I'm sure I'm missing something obvious here. I'm try to take a PDF file (created with Word) and turn it into an EPub file for my Sony EBook Reader. By default, the font is too small to read. Reading the help, no problem, just use font size rescaling. I do this and it doesn't seem to have any affect, even when set to 48pt. Also, the EPub created doesn't resize when you use the button that switches between S, M and L fonts.
Any help would be greatly appreciated.