So me and my two friends just bought this to enjoy good old time again. though we are having problems setting up the game to play.

We have all installed it and the patch and we are on the same Hamachi network and using "playing over TCP/IP" and entering the host computers ip found in hamachi.

However we only get the answer that the ip is not found. Anyone having any experience with this who know what to do? We have tried hosting on all threee computers and unblocking it from all firewalls etc. Not sure what to try next.

Try GameRanger - http://www.gameranger.com/

Don't know if that is the problem

Beacuse I can se my friends game without even searching for them. But when I press join the connection times out. But if I host however, they netiher can se my game or join.

Sounds like your routing may be off. I would try out triock's suggestion.