[newbe]

While installing a new language for the system through the "Regional and Language Options" under the Languages tab, I encountered an error. The checkbox "Install files for east asian languages" met an error saying "Could not copy files." While...

While installing a new language for the system through the "Regional and Language Options" under the Languages tab, I encountered an error. The checkbox "Install files for east asian languages" met an error saying "Could not copy files." While attempting it again, all files installed correctly, providing no issue. I checked the other tabs, and under the advanced tab, the "language of non-unicode programs" dropdown menu was changed to Japanese. I took no notice of this because the entire reason I need the japanese language installed on my computer is because I have a couple japanese programs that crash when trying to load. The solution I found was to enable east asian languages. I did and applied it. It asked me to restart the computer.
Doing so after finishing my work, it came to the login screen. Apparently, windows decided to force the language as the native language of the computer. While trying to login again(I am using Win2k style), the login prompt vanishes and the window "Loading your personal settings" appears for a second, therefore accepting the PW. Then, it returns to the login prompt. After several tries, I restarted into safe mode. Yet still, the same issue.

I can get access to the drives, and files inside, but not on a windows system, so no windows programs will work. I want to know what file/files the "Advanced" tab in the "Regional and Language Options" accesses so I can change it manually back to English.

Is there another way, without a windows system, to change this? The only backup I have is a TuneUp Backup that backed the system up as I shut the computer down(I have it backup once a week as the computer shuts down)

I do not want to reinstall windows, because I had to do a massive registry edit to get the computer to work.
The reason: Because I only had 2 20G HDDs to begin with, I installed windows on Drive C:, one entire HD, and the programs on drive D:, the other HD. This was accomplished by copying everything in the "program files" folder and changing every single instance of "C:\program files\" to "D:\" in the registry. Sadly, I have 512M ram and a 900MHz processor, so the entire process took an average of 27hrs per Hkey, and an additional hour for copying the programs that came with windows. I do NOT want to have to do this again. Unless someone can tell me of a registry editor program that will automatically replace all of the "c:\program files\" instances with "d:\".

I would prefer the manual way of changing the settings over anything else.
For those of you who read the entire thing and didn't say "screw this" because it's long, I thank you for at least listening.