Hey Pohh.
http://code.google.com/p/avesta74/
Use this server, it comes with 7.4 support, 7.6 support & 7.7 support.
It's 100% stable, I can assure you it's the best you will find. It was used by EliteOTs and MasterCores.
I downloaded it but here's the thing. Im new to this and I dont know how to do this " For 7.6 compile with definition __PROTOCOL_76__ ". Can you explain this for me? I would be very grateful.