DivaVocals, jimmie & DrByte Thanks for your help and patience,

Problem Solved. Based on what everyone was saying I decided Purchase Order Basic by l3ackdraft should work so I did a re-install from a clean backup copy of my ZC install to get rid of any other PO modules I had been testing. After I installed Purchase Order Basic I was getting radio buttons which I did not want.
(No surprise there, doing what it was supposed to do)
The reason for it was I still had "Money Order" (The only payment module I was using) installed.
I do not collect payment in ZC as all that stuff is done in QB
Removed money order and Walla not more radio buttons.
Yes, I previously modified that code to not display the buttons
I believe some kind of payment module has to be installed for ZC to function properly.

Now I have PO input capability but it's not required.
NOTE: For my purposes I did have to change includes/languages/English/modules/payment/purchaseorders.php line 22 to: define('MODULE_PAYMENT_PURCHASEORDER_TEXT_TITLE', '');
(Removed verbiage)
AND
Also /includes/modules/payment/purchaseorders.php Line 122 to: $order->info['payment_method'] .= . $_POST['po_number']; (removed ':')

The verbiage and colon were becoming part of the PO Number.
That verbiage needs to be codded as a Label but I don't need it so I'll fix that later.

For this particular customer I am using ZC as a Ordering System only. It's for preapproved wholesale buyers and I further streamlined it for sales reps armed with iPads and unless they want to enter comments or add a ship to addy it's all scrolls and taps. It's been up and running for a year now without any glitches.
I then suck those orders into a CSV document with "Export Shipping+Order Information" and import into QB with an importing program "Transaction Pro Importer 5.0" by another vendor.

A list of the ZC plugins I am using:
Some required modification but it's what the customer wanted.
EasyPopulate-4.0-master (Download from Github:
https://github.com/chaddro/EasyPopulate-4.0
Export Shipping+Order Information
FEC & CSS JS Loader
Column Layout Grid for Product Listing
Minimum Order
Extra Fields on Customer Sign Up
Export Shipping+Order Information
Checkbox TextBox Icon Product Checkout
Purchase Order Basic

If you care to see the end result the link below will take you to a a fully functional "Demo Only" install.
You can register and order the bogus products if you want to. For sure NO shipping or billing will occur.
I will be taking this Demo Only site down in a week.

http://www.lucieno.com/ogerbad

Thanks, linuxguy2