[AccessD] Print graphics file from Access

Hello All:

I have an A2003 invoicing database; when it prints an invoice, it prints a
signature which has been captured by another app.  The signature is in a
.jpg file.

This worked fine until recently, when we changed the signature capture app.
 It turns out that the new app is creating a transparent .jpg, and the old
one created one with a white background.  Access won't print the transparent
.jpg.  If I open a signature file in Paint, then re-save it, Paint converts
the transparent background to white and Access is happy.  But my client
isn't happy at the idea of doing this by hand for every invoice he prints!

Does anyone know of a way that I can automatically convert a transparent jpg
to white background in code, or have any other ideas to make this work?

Thanks,
Doug