It is not possible to use them: they don't allow to specify a USB port.
Also, I think that 1000w does not accept PCL language.

>What happens if you use the HP3 or HP4 printer drivers in Windows 98?
>
>>I try to print to a HP LJ 1000w printer from VFP 7 application.
>>This is a USB printer. Windows 98 does not have drivers for it, so I use
>>drivers coming with printer.
>>
>>After printing or preview, a blue screen with text Fatal Error
>>appears.
>>
>>Is it possible to use Hewlett-Packard Laserjet 1000w printer from VFP 7 ?