I need a 64 bit Canon D780 printer driver...where can I download? I went to canon, but their drive is only a 32 bit

Okay so this may not help you now, but I just got a hand me down D780.
After much frustration and research here's the solution that I was able
to work with. It isn't perfect; but it's something....

So here
are the steps for network shared installation; assuming your D780 is
installed on an old xp desktop and you're using a Win-7 laptop. If
you're using the printer directly on your Win-7 machine, just use the
local printer installation after the XP mode has been installed.

1)
You'll have to install WinXP mode on Win-7 using the steps listed on
this link. If you have a genuine Win-7 copy installed, this download
and installation is free, courtesy Microsoft.

http://windows.microsoft.com/en-us/windo...

2)
After installation, you'll have to change network settings for your
virtual pc. This step is necessary if you want to be on the same home
network and want to see the printer! Never mind if you don't understand
this logic. Just follow the steps and you'll do just fine. To change
the network settings in vPC: click Tools; click Settings; select Network
from left; then for Adapter 1 choose the actual network adapter
connected to your router (simply put: select the wireless adapter or
wired adapter you're using to connect to your actual router or home
network. You can find that from Change Adapter Settings in Network and
Sharing.) Click Ok.

3) Now add the printer as local or networked
following your usual XP steps. You should be able to see the printer.
If not, open a command prompt window, check your ip to make sure you're
on same network. If not, or if you don't know how to do that, just
type in ipconfig /release enter and then ipconfig /renew enter. Try to
connect to the shared printer by pinging the ip of the host computer.
If the ping works, you should be able to see the printer then.

Connect printer and use in XP mode. Not the best solution, I
know. But it's free and at least lets you print from your laptop,
given the circumstances.
Okay so this may not help you now, but I just got a hand me down D780. After much frustration and research here's the solution that I was able to work with. It isn't perfect; but it's something....

So here are the steps for network shared installation; assuming your D780 is installed on an old xp desktop and you're using a Win-7 laptop. If you're using the printer directly on your Win-7 machine, just use the local printer installation after the XP mode has been installed.

1) You'll have to install WinXP mode on Win-7 using the steps listed on this link. If you have a genuine Win-7 copy installed, this download and installation is free, courtesy Microsoft.

http://windows.microsoft.com/en-us/windows7/products/features/windows-xp-mode

2) After installation, you'll have to change network settings for your virtual pc. This step is necessary if you want to be on the same home network and want to see the printer! Never mind if you don't understand this logic. Just follow the steps and you'll do just fine. To change the network settings in vPC: click Tools; click Settings; select Network from left; then for Adapter 1 choose the actual network adapter connected to your router (simply put: select the wireless adapter or wired adapter you're using to connect to your actual router or home network. You can find that from Change Adapter Settings in Network and Sharing.) Click Ok.

3) Now add the printer as local or networked following your usual XP steps. You should be able to see the printer. If not, open a command prompt window, check your ip to make sure you're on same network. If not, or if you don't know how to do that, just type in ipconfig /release enter and then ipconfig /renew enter. Try to connect to the shared printer by pinging the ip of the host computer. If the ping works, you should be able to see the printer then.

Connect printer and use in XP mode. Not the best solution, I know. But it's free and at least lets you print from your laptop, given the circumstances.