Hello, please understand the forum language is english.
We and many users routinely work with ATENA on Windows 7 x64, this is the recommended OS version, and no special settings are required for the installation. Just make sure you are using the current version, ATENA 5.0.3d (or at least ATENA 4.3.1, which already has supported Windows 7). All users with valid maintenance can get this version using the ATENA Update Check utility, or by sending us an email specifying their ATENA User ID (WR). If your maintenance has expired, please ask our sales colleagues for a renewal offer.