How to print 9x12" pdf from Acrobat on 11x17"?

Question

This should be easy to do, but the dialog boxes in Acrobat won't let me print a 9x12" pdf centered vertically on 11x17" at 100% on our HP 9500 laser printer.
Instead I get an 8.5 x 11" sized printout, scaled down (9x12" doc scaled to fit 8.5x11" paper), in the bottom corner of the 11x17.
I've gone thru the obvious menus:
Page scaling = None
Paper handling / Destination paper size:
- Tried "Use documents paper size -8 1/2x11" (No choices here, document is actually 9x12)
- Currently at "Scale to fit paper" / "Tabloid"  (This is apparently the ONLY place Acrobat lets me choose paper size. I dont want to scale at all)
"Paper Feed" is tray 2- loaded with 11x17
Would appreciate some insight on what to try

Answer 1

When you go to print menu look toward the bottom: http://www.screencast.com/t/Uam4FxLNMJ52
then click on item I have arrow pointed to.
Then  you will see this: http://www.screencast.com/t/aHF7HxvXd
Yours may vary according to your printer.
Then setup size Paper.
if this is going to be a permanent setting for acrobat then when you open to: http://www.screencast.com/t/aHF7HxvXd and finish setting up at the to top where is say attributes click and hit  Make Default (save).
This tells printer when acrobat is openned that this is default setting. You no longer have to set this.
Or you can from the Printer Menu click on the printer menu button at bottom of screen click on button that shows your Printer's Name and choose Save. Give a title such as Acrobat 11X17" the save click save or okay.
then you can from printer menu call up this setting in future.