How to deploy dotcms war file into the existing tomcat server?

I downloaded dotcms1.9.3 from http://dotcms.com/downloads/, how can i deploy it into tomcat 6, i do know that i have to create or modify some开发者_StackOverflow中文版 files like specify the mysql (not POSTGRESQ )database connection string to make the system work, can you go into detail about it? Thanks in advance!