Trying to print wirelessly to a canon mp780 from mixed mac / pc environment

So I'm currently using a netgear ps121 a canon pixma mp780 and mixed
mac / pc environment (both computers with the latest operating systems
etc.)

I'm having some trouble and wondering if an airport express or extreme
would have better luck sharing this canon printer wirelessly to the
mac.

I'm working with a brand new core 2 duo macbook

the ps121 hosts the printer successfully on the network for our PCs in
the house with a static IP, but I can't get the mac to print to this
pixma mp780.

with LPD on the mac I can see the printer.. but I don't have any canon
pixma drivers to select from Line Printer Daemon.. the generic driver
it picks won't print squat, and I don't have any GIMP drivers or
anything else open source to lash this together.

is there any way to get this mac - ps 121 - and canon mp780 combo
working?
settings? drivers I'm missing?

will another print server box like apple's get the job done?

canon released some new intel mac drivers for this printer that were
supposed to enable some networking capability, but it looks like the
printer has to be usb tethered to one computer and shared with the
driver over the network to other computers.... and leaving a computer
on 100% of the time to host this printer is an unacceptable energy hog
in my opinion. I figure I'd rather just switch to a printer that has a
built in network capability...

from canon support website

http://alpha02u.c-wss.com/inc/ApplSe...nu=FA&TRF=MAIN

Category : Other Inquiries
Description : How to install the Software?
How to Install the Driver and Software (Mac)

To use this machine connected with a computer, application software
must be installed in the computer.
CAUTION:
- If antivirus software or system-resident programs have been installed
in the computer, close them before installing the drivers.
- When Mac OS X is shared by multiple users (accounts), first, log in
as an Administrator.
NOTE:
To use this printer in a network environment, install the MP driver
into both the print server (computer connected to the printer) and the
client(s) (computer(s) other than the server).
Click the print server's [System Preferences], [Sharing], and
[Services] to select [Printer Sharing].


1. Connect the printer to the computer with the USB cable.


* The image is an example using the MP750 model.


2. Turn the computer on to start Mac OS X.


3. Insert the CD-ROM for setup (Macintosh version) into the CD-ROM
drive, and double-click the [CD-ROM] icon on the desktop.





4. Double-click [Setup].




5. Enter the Administrator name and password for logging on to the
computer, and click [OK].

NOTE:
Click the [?] icon to display the Help files for the printer.



6. Click [Easy Install].

NOTE:
- The software installation can be performed using [Easy Install] and
[Custom Install] methods.
- [Easy Install] enables the installation of the MP driver, MP
Navigator, application software, and on-screen manual.
- To change which items are to be installed, click [Custom Install].



7. Click [Install].




8. When the License Agreement window is displayed, read it carefully
and if you agree, click [Yes].




9. Installation will start.

NOTE:
Installation may take several minutes to complete.
Please be patient.
If a message requesting action for installation is displayed, follow
the directions on the screen to continue the installation.



10. Click [Next].




11. Click [Restart].

NOTE:
If the installation is not successfully completed, re-install the
software.



12. Installing of the drivers and software is completed.