Hmm.  One small issue, and it' s not a problem with the script, it's with Victoria 4.  It's because her default pose is with bent-downward feet, which increases her length.  Just as a comparison, V3 is right on: the script gives her height in the zero pose as 76.0620 feet.  I measured 76 using a prop and adjusting it's yTran to get the top of her head.

V4 reads 78.7658 inches.  The attached image shows the problem, which is that flat-footed, she's just a tad shorter than V3 (about 0.5 Poser inches).  Her zero pose, however, puts her above V3 by those almost 3 inches.  This causes subsequent scaling issue.  Not too much to be a problem if you're only working with rough heights anyway: as it stands I'll use the script in a heartbeat, as it at least gets you in the ballpark.  I'd cheat a bit on the height, saying I want V4 to be 5'7.5" instead of 5'6", for example, to take that extra base height into account.

Still, having the option to enter the base height manually, so I could subtract those 3 inches at the start, would be neato-keen.

Incidentally, beside them is Dr. Geep's 9 foot measuring stick.  Its problem with Poser 7 scale is obvious (V3 measuring just under 6'2" instead of 6'4").  Fortunately, using the script to get V3's calculated height, it's trivial to rescale the Y on the prop to make it match using the height of V3 as a baseline.  Scaling it down to 96.9% on the Y gets it close enough.