I have all the info you need but Im uncomfortable giving it to you. How do I know this isnt a way to gain unauthorized access to my computer?

Im an experienced user of Limewire with a new problem. I went into the configuration box and noticed that there is an area where you can modify the port connection number but I dont know what port number I need to "listen for incoming connections".

Nothing on my computer is different than it was before I reformatted it and when I had limewire before.

Are there different port numbers I can try?
Thanks