Binary Installation: 1)    Install JDK    (recommended 1.4.2) 2)    Install Apache Ant 3)    Download and extract the ychat-bin.zip file to any dir you like 4)    Open a command prompt and cd to the above dir 5)    Type the command(s): run        (for Windows) or chmod +x run.sh        (for Linux) ./run.sh That's it, we are done !

Source Installation: 1) & 2) as above 3)    Download and extract the ychat-all.zip file to any dir you like 4)    Open a command prompt and cd to the above dir 5)    Type the command: ant chat This should compile the src code (without errors) and create binaries in the build dir and execute them.