Appreciate the help, guys, but actually the Nexamp I'm looking for is an older one. There were 2 versions (same author, though I don't know who the guy is). Here's a link to show ya what it looks like. Scroll a little, 23rd image down.
Worse comes to worst I can probably recreate the thing, or at least approximate it, but never having made a skin (and being lazy), would much rather just download it. If it is still around somewhere it's mighty hard to find. Was half hoping a mod would chime in, "yes, we have both those skins in our 'every skin ever made' section", but apparently this is an obscure one. Too bad, good design.
If anybody can find it, gimme a shout. Thanks.