PHP Text Printing

I am new to the ZPL world, and am attempting to print a raw string to a ZP 450 - installed locally on Windows 7 (USB).

 

My PHP program is fairly simple, but is failing to open the printer.

 

I have installed the printer as a generic windows printer - per instructions from my U.P.S. representative.

I verified my PHP printer related entries with SMEs in that arena.

 

I'm not sure how to verify communication with the printer, since the Zebra driver is not being utilized.

I have working for a few days on trying to communicate via Windows - or via my PHP.

 

I am also trying to simply copy the string into Notepad (and similar), and send it to the printer.

 

Any help is appreciated.

 

Of course, I can provide further details, if anyone is able to help me dig.