Need 3.5" ProDOS Bootables for //c+

[Chris Morse <chris@invalid.com>]

Just got an Apple //c+ from eBay, and (as expected) the software is
quite limited.  The //c+ has an internal 3.5" drive, and all that I
got with the machine were some 5.25" disks along with an external
5.25" drive.  I've got a big pile of new blank 800k 3.5" floppies, but
no ProDOS.  If I boot a DOS 3.3 5.25" disk from the external drive, it
doesn't seem to recognize the internal 3.5" drive (doesn't even try to
access the internal drive if I try to catalog any slot/disk
combination.)

Would have been nice if the original 3.5" floppies for the machine
came with it, but that's probably too much to ask.  Anyone willing to
send me a few 3.5" floppies with the basics on it?  Or - better yet,
tell me that I have what I need to pull it off myself.

Unfortunately, at the moment, I have no access to any other Apple //
or even Macintosh systems.  Ack!  Ideally, a copy of the ProDOS system
and utilities disks on 3.5", I think, is what I would optimally need.
Once I get a null modem cable hooked up to my PC, I should be able to
figure out the rest of it.

Perhaps I can do something like this: (?)

(1) Get null-modem cable and hook //c+ up to my Windows machine
(2) Boot blank DOS 3.3 disk from external 5.25" drive, which I have..
(3) Somehow load/run ADT (Apple Disk Transfer) onto //c+
(4) With ADT, somehow copy over a 5.25" bootable ProDOS disk image
(5) With 5.25" bootable ProDOS disk, format a 3.5" ProDOS disk
(6) Now I have a 3.5" ProDOS disk!

I've never used ADT before - this is pretty new to me.. I think I
recall reading that ADT can sort of install itself given a working
serial connection to a windows machine.

Thanks for any help!
// CHRIS