So you’ve downloaded a zip file containing UP2P (or P2Pedia, the distribution of U-P2P containing only the P2Pedia wiki system). Now what?
A – Binary distribution
If you just want to run the prepackaged U-P2P distribution, it’s easy, all you need is the Java JDK version 1.6 or later.
1 – Extract the contents the of the zip file to any directory of your choice. For example, to a new directory on the desktop called “UP2P” .
2 – Check that you have Java installed, and that the JAVA_HOME environment variable points to the folder containing your JDK.
For example, a typical location under Windows would be: JAVA_HOME=C:\Program Files\Java\jdk1.6.0_27
3 – Open the folder where you extracted U-P2P. Then inside this folder, open the folder called “Tomcat”, and inside the Tomcat folder, open the “bin” folder. Run the file “startup.bat”  (under windows) or “” under linux or Mac-OS.
4 – The Apache Tomcat server will now fire up, and you can access your local UP2P node using any web browser (UP2P works best with Firefox or Chrome — there have been some minor issues with Internet Explorer). Connect your browser to the following URL: http://localhost:8080/up2p/.
5 – The U-P2P home page contains lots of information to get started!
B – UP2P source distribution
C – Configuration 
For now please see the U-P2P user guide.
D – Troubleshooting
Not working ?
Here are the most common problems and their solutions:
1 – Problem: It won’t even start. I double click on “startup.bat” and nothing happens. A window appears for a fraction of a second then disappears again.
    Solution: Your JAVA_HOME environment variable probably isn’t set properly. See the user guide for more details about setting environment variables ( the user guide is a pdf document packaged in the UP2P zip file).
2 – Problem: Tomcat starts then closes with an error when it tries to bind to port 8080.
    Solution: Tomcat is configured to run on port 8080. Your port 8080 may be in use. Change the tomcat server configuration to run on another port.
3 – Problem: I can’t find anything in the network.
    Solution: Connect to other nodes.At the top  right corner of the screen there’s a link saying “Connected to [number] peers”.
Connect to your friends. Ask them for their IP and port, and add them to your hostcache, in order to connect to them.