Okay, I installed the HP PostScript drivers, but, as far as I can tell, there is no option to 'Save to File.' [Such an option may be there somewhere, but I looked all over the place, and I couldn't find it...]
Besides, the idea of saving to PostScript, and then running some program like 'ps2png' or 'ps2tiff' is not very appealing to me, for at least two reasons: 1) It's very batch-file-ish in nature, i.e. I've got to download some monstrosity like Ghostscript, get it installed, get it configured [no trivial task in and of itself, believe you me], then write some batch-file-ish thingamabob to open the PostScript file and process it - I'd much prefer to [at the very worst] make a call straight to a DLL from within a Labview VI. But that's only the start of my woes; once I've got a PostScript file, I've got to figure out some way to cut just the picture of the Waveform Graph from the larger picture of the VI window - I suppose I could use some sort of a Clipping Path or an Encapsulated PostScript Bounding Box, but at this point we've clearly crossed over into the realm of what I would call 'hideously ugly, grotesquely inelegant, batch-file-ish hack.' Plus, my gut instinct is that it would take a bare minimum of a week or more to get such a thing up and running efficiently, when, if I could make a call straight to the Labview printing infrastructure, I could do it in just a few minutes. 2) It's very, very difficult to venture into the realm of PostScript software [especially Ghostscript] and keep your project from becoming contaminated by the GPL, or worse [the Aladdin license agreement ain't exactly a stroll on the beach].