Marty,
If you don't find everything you need I posted a file postalbc.zip on the Compuserve dBASE and FoxPro forums a long time ago. It had the code needed to generate the checksum digit and print a barcode on a HP-PCL5 compatible printer. I can crank up the old 486 and dig the file off of it if you need.
>Boss says, "Wouldn't it be cool if we could pre-barcode our envelopes?"
>
>"Sure boss, what do those barcodes mean?"
>
>"Dunno, let's do it."
>
>Can anyone point me in the right direction? He's talking about those half barcode jobs that live under the addressee info.