A quick clarification: when you say it's working in 3.1 x64, do you mean the progress bar as well?
As for the cmdcount (cmdpc) business, I've gone ahead and removed it as part of my modifications--I see no point to keeping it in a Win7PE_SE version wherein the circumstances its checking for don't really exist. I'm building a WIN7PE_SE with it removed, and I'll check on functionality to report back to everyone. If I manage to get it all working, I plan to post if for everyone who cares to add it to WIN7PE_SE.
I'm guessing my issue was not being able to see the progress bar, as the HTA does appear to have renamed the primary partition of my test machine "system" which it was not named before. The only question then, if the progress bar is working in 3.1 x64, is what I need to do to get it to work in 3.1 x86, or if it's an issue of video drivers/cards. In that case, I may try a few drivers.
Depending on what happens with the build of WIN7PE_SE I'm making right now, I'll double check with a normal PE 3.1 and see what happens. It'd still be better than nothing (and far more capable than the old version of this HTA that's currently in use in my organization). I'll edit this post to provide updates hopefully later this afternoon.
Thanks again for your help.
EDIT: So, good news. The only major issue is the progress display. It applies the images just fine. I'm currently experimenting with using the 6.0 wimgapi.dll (the same .dll called for by the normal GImageX WIN7PE_SE script), the updated GImageX_COM from autoit, and the newest SetRes to see if that somehow changes anything (at the very least, they're more recent versions, meant to play nice with windows 7). I'm also having trouble with the network drive mapping window, in that it displays mostly off screen. I've messed with how it determines "center" to no discernible effect, and I'm turning off a few options in WIN7PE_SE. If that doesn't resolve it, I will try with a standard PE 3.1. Also, the cmdpc/cmdcount stuff was worthless. Nothing that I've seen indicates it's needed--at least in WIN7PE_SE. So, I've removed it.
Edited by dcistech, 11 May 2012 - 03:15 PM.