First create a database location, by creating an empty folder in the filesystem, for example C:\DCdatabase\
Download and unzip the server package. for example in C:\
In dos, run:
C:\dc-server>datacrow-server64bit.exe -userdir:"C:\DCdatabase\" -webserverport:80
You can now login onto your local server on http://127.0.0.1/datacrow/
Username: SA
Password: (blank)
The full manual can be found at http://datacrow.net/manuals/data_crow_client_server_howto.pdf