Hey guys, I did something really stupid 

I just installed a Japanese game named Dies Irae and Fate/Stay Night. The problem is I have to set my Regional and Language Settings to Japanese.

The problem was, I left my winxp installer back at the phili and my mother forgot it too, and we don't have a winxp cd here except for the service pack 2 cd.

I tried installing the eastern asian language (page 2 in region and language) but it required the main so I cancelled it. I looked at page three and saw there's japanese option and I clicked it and asked for a few files to get installed. Since I'm an idiot fanatic who wanted to see Emiya Shirou already, I asked my friend to send me some files :x

I would give the list but this isn't my comp and my friend wasn't set in autolog, but as far as I can remember it keeps asking for .fon and stuff and I didn't paste it on c:\windows but just at some folder at desktop. It said it was installed succesfully and asked me to restart then I did.

Afterwards, I tried logging in, the password was correct, loading personal settings, back to logging in again. It also won't work in Administrator account.

Since I can't access inside and I don't want to reformat my pc (My God, I haven't backed up a lot of files and most of them are extinct at the net and my Sacred Moon will be in peril) is there a way to change it back using DOS? I'll try borrowing a friend's CD to boot up DOS if it's possible :x

Thank you

EDIT: I tried the whole f8 thing, I can't even get in Safe Mode

And FYI, Fate is a hentai game. I had it years before it became an anime!

@Chainer I know XD All of Type Moon's stuff is hentai >.> But The story is just great (I have Tsukihime)
@Dada, ugh I knew it, so it's that way could reinstalling win xp files be possible?

Don't reformat, just reinstall XP, you'll keep all your files.

I knew it!!! Thank you goat *hugs*

Just remember when it asks to format, to "keep current file system intact", and everything but the OS files will stay.