I read somewhere that XP is the oldest Windows compatible with Armory but can't find that info anymore, am I correct? Apparently that old computer growing old without use had Windows 98 installed instead of XP, jesus. Do I need to install another OS? Naturally talking about the offline use.
I assume that Windows 98 is too old, but I have no evidence to back that up. Please try the "windows_all.msi" file and let me know. I just wouldn't count on it. As long as it has 128 MB+ RAM, it can run Ubuntu 10.04-32bit, which can be setup in about 20 minutes, and all you need is the offline bundle. It's
possible even without any real linux experience. But I'll let others comment on whether that's accurate.