Printing from Finepix Viewer

Hi,

I bought the Fuji S5500 back in January and the bundled software is
finepix viewer. I've been using it to print A4 and 4x6 photos'.

Problem now is that I've bought picture frames that accommodate
4.5"x4.5" (12cmx12cm) prints. Finepix doesn't seem to print this size.

Is there free software out there that would allow me to print images in
this format?

Thanks,
jm