Win7 Starter + PDF print to Ubuntu Printer

[NoOp]

First off, I know very little about Win7 & this request may be more
Windows related than Ubuntu/linux related, but I could use some help.

I have a Canon MP750 attached to my primary Ubuntu machine (32bit 10.10)
and it's used as the primary print server. Nearly all network devices
attach & print properly w/o issue: WinXP, Win7 Home Premium, Win7
Starter, Ubuntu. The issue is with my wife's netbook HP-Mini w/Win7
Starter. She can print all standard documents to the printer, images,
borderless images, anything, with the exception of PDF's.

On that netbook Printing from OpenOffice/LibreOffice, Web Browsers,
Notepad, et al, work without any issues at all. The printers are set up
as standard network printers. However, when she attempts to print any
PDF documents the print jobs seem to just fall into dev/null. It doesn't
matter if she uses Adobe Reader 9, or any other PDF program (we've tried
cutepdf etc). They all silently fail.

On my laptop with Win7 Home Premium that I use for testing, and for
WinXP I use IPP:631 for the printers... Win7 Starter doesn't have IPP.
So on the laptop with Win7 Home Premium I configure the printer exactly
the same as on the Win7 Starter netbook - standard discover printer,
select the discovered printer, print. Works w/PDF's & all other docs.

So, I'm a bit at a loss here. I've googled my brains out & found a few
'references', but nothing that seems to work. One suggests:
<http://social.technet.microsoft.com/Forums/en/w7itpronetworking/thread/233bb347-43ad-4cf5-82a7-f7d503fe56ae>
enabling cups-lpd on the linux box... I've cups-installed, but can't
seem to sort out if the Win7(S) is using that - or how to use it on the
netbook.

Any help/suggestions appreciated... I'm getting tired of my wife having
to forward PDF's to me to print for her.