Mike wrote:
Download a copy of Thunderbird (it's free) from www.mozilla.org.

I tried this and couldn't get it to accept my program files folder resides
on my D drive. Same with Firefox browser.

Bizarre. In a habit acquired when virus writers were less clued up than
they now are, I run without a C: drive altogether. In honour of XP, my
system files are on a partition it calls X:, D: holds date, E: is
swapEE, F: is Fragephera (temp files and so on). I've never had the
least problem during Mozilla, Firefox, or Thunderbird installation
telling them to put their binaries over in D:\winapps - to which,
moreover, my 'ordinary' user account has read, but not write, access (I
run only the installer from an Admin-privileged account); nor to tell
them, after the first install, to put cache and profile directories
where *I* want them.

There *are* apps which need more fettling to be told about this vague
approximation to 'least privilege' working. Unsurprisingly, MS Office is
one such: whenever I've installed as God but run as Mortal, I've had 3-4
popups each time I open an Ossif document saying 'I'm gonna get some
Help files just for you from my Install Directory. Ooh, where's that?
D'you have the Office CD to hand, mortal dear?' - which I dismiss.
Usually by the time it's tried to do this 3-4 times it's lost all heart,
and brings up a document-free app window, requiring me to manually Open
the document I want. Workaround is to elevate privs of Mortal user to
God, let Ossif do its user-specific config, then drop privs back down to
Mortal. (Thanks again, MS, for being too smart to learn the basic ideas
from operating systems of 30 years ago.)

Stefek