Some fonts won't print

I have an HL-1440 Brother laser printer that is connected to a PC (running
XP) on my network, it is not a network printer.

I have a sample document of 8 lines, each in a different font. From my XP
laptop I print the document to the networked Brother printer and everything
prints correctly.

From my Vista PC, when I print this document to the Brother Laser printer, 6
fonts print correctly. The two lines in Times New Roman and Arial fonts
print as small empty boxes (but the number of boxes does not match the
number of letters in the line being printed). The document displays all of
the 8 lines correctly on the monitor and prints all of the fonts correctly
to an HP inkjet printer connected to the Vista PC.

What I have done so far:
1. I have uninstalled the Brother drivers on my Vista pc and installed
drivers approved for Vista from the Brother web site.
2. I have uninstalled MS Office on my Vista PC and re-installed it from the
installation CD. It is an XP version of Office but seems to work OK except
for this recent font problem.
3. I can copy the 8 line document from the Vista PC to a "thumb drive" and
take it to either of my other PCs and it prints OK.

I can get around the problem by creating a pdf file and then printing it,
but I'm not ready to surrender yet. I hate to let the computer win!

Tom