I'm trying to move my old wordpress installation (alredy version 2.7) to a new server. Therefore I changed the settings at the old server (updated the two urls values), copied all the files to the new location, moved the databases and modified the wp-config.php file. But now it's redirecting to wp-admin/install.php and showing up as "Welcome to the installation".
The folder where the existing blog were copied to is a folder where I checked out wordpress via svn before, so I overwrote some files of the plain software.