The original line is correct, since WeiDU makes a copy of chitin.key in the BGT\Backup\0 folder. Your chitin.key should be restored automatically during uninstallation.
OK Thanks ! I thought that COPY worked as in windows ! Thanks
you are able to say "no", but a linux-compiled version would be very nicer than a "wine ti2bg2.exe blablabla...", especially when you know that some users use cedega/cvscedega/winex instead of wine !
(wine is a kind of windows emulator under linux... )