Well afaik the app has been dead for some time, so there's no wonder it didn't show up. I'm confused about changing project names being a chore though. Most of my apps are saved as "project 1" while the folder itself is the name. Of course I edit the internal project name, but even in .net that should be extremey easy. Regardless, cpwizard it is I guess.

I wasn't going to say anything, because it's always good to throw in stuff you want, but since youki mentioned it....
It seems to me that irc on a cab, where you'd need to use a on-screen keyboard, is rather useless. The irc channel itself certianly wouldn't be, but having it in the viewer sorta is. It could be harmful as well since adding in all that extra code/graphics/whatever into a resident program is only going to bulk up whatever memeory footprint it already has.
Also I'm curious as to your line of thought as to why it would be so slow on lesser machines. I chose to write j5 in gdi (which is even crappier proformance-wise than gdi+) specifically to make the required resources lower! Processing power isn't going to be an issue because mame is paused nor is rendering speed as, save your irc component, It'll be rendering static images. I mean I don't know what's going on inside which is why I'm asking....
Just as an example j5 can display sf2 (which is a "full load" game that uses all labels) with scrolling text and the full resolution control panel pack image shown and it uses ~0% procesing power and roughly 7 megs of ram... 8 megs under "full load" (when it's calling mame multiple times to get various data). The procesing requirements never spike above 1% either. Now unfortunately, you are using .net so we can add 15-20 megs on to that, but that's still fairly slim. Even the direct draw overlay shouldn't be effecting things that much. Dx7 has a fairly small footprint.
With that being said, if anything is slowing down your app it's the fact that you are using directx. The reason I did gdi is because when two direct-x apps are open at the same time (in this case one being mame) they fight over the rsources to the video card, even if there are more than enough resources. I can't run 3dsmax and dk at the same time, for example, they both stutter and eventually crash. My point on that is switching to full direct-draw or d3d would probably slow it down, unless you are doing some kind of crazy animations I don't know about or constantly refreshing the screen instead of just doing it once.
I'm not trying to be critical on that point, I'm just trying to be helpful. If it's really hogging the resources like you say (even to a much lesser degree than the minimum specs you posted) then there might be something off in the code.