Times New Roman Font Not Installed?

OS: Vista Home Premium 64-bit with Office 2003

When a client asked me to do a document using Times New Roman 12, I
discovered that Vista did not have that font (it didn't appear in my font
list nor was it available in Word), so I downloaded and installed it from a
file called Times32.exe. I had to manually extract the TTF files from the
archive because running the exe didn't install the font, even though the
installer said it had. When I used Vista's Add New Font and specified the
actual TTF files, Vista said they were already installed, and THEN Times
New Roman appeared in Vista's font list and in Word 2003.

Now I have Word 2003 telling me that I'm using Times New Roman, but it
doesn't look like Times New Roman on my screen nor on paper. It comes out
in both places looking like Tahoma, which is what I set up to be my default
font in Word.

At first I thought it might be a problem with the template (.dot) file I
was using for my client, so I created a blank new document using Normal.dot
and set the font to Times New Roman. It looked like Times New Roman on my
screen, but on paper it looked like Tahoma.

Do I need to find a special edition of Times New Roman specifically for
64-bit Vista? Why is what I see not what I get?