Okay, if I understand right it looks like you're only vulnerable if you clicked "allow" in the Windows firewall alert screen.
I have one of these chargers I bought maybe a year or two ago, and I downloaded the software and everything, but I don't remember a firewall message asking if I wanted to unblock or block anything (and I'm pretty sure I wouldn't have clicked "allow" anyway).
I have Vista, and I checked the C\windows\system32 folder for the Arucer.dll file, and it's there, but the date modified is 5/10/2007, and I know that predates when I bought the charger, so I don't know what all that's about.
And finally, I opened up the Windows Defender program and checked the list of Allowed Items, and there's nothing there.
So, I don't know if I was just lucky and my charger wasn't infected, or what happened. I uninstalled the software and I'll try removing the .dll file too.
Anyone have further details or advice?