Hi, I'm not sure that my friends have similar errors or not. I know only that they couldn't install. (edit:
they answered)
However, two days ago, I rebuilded my computer and I installed Vista as English and I changed other details (geography, time zone, keyboard etc..). I installed Zimbra but I got same errors, too.
Today, I tried to install Zimbra on my office pc (Turkish XP), and got same errors.
In conclusion that, I tried the install Zimbra three different computers more than 6-7 times and different platforms (Vista/XP, English/Turkish)
According to me, the problem is to grow out of Turkish supported Windows package (English or Turkish versions have same problem) or some other programs.
But certainly you have a bug.
So, I decided to wait until first stable version of Zimbra.
Thanks for your helps...