My firewall is properly configured, I try port-forwarding, I tried switching ports, I dunno what else to do. I have Optimum Online btw and I read the threads you recommended that I read and I tried everything in them.

For my router configuration, if I choose manual and not UPnP (I tried UPnP and it doesn't work) does the port I choose have to be the same one as the Listening Port?

Yes. You'll have to change your listening port to one of the ones that are (possibly) going to work with OOL, then make sure you use that same port number for everything else you configure.

Before you do anything though, read this thread. It's new this morning
http://www.gnutellaforums.com/showthread.php?t=55360
It's worth your while calling OOL & asking them for a straight answer... are you ever going to be able to run LW successfully. If they're monitoring all ports now, chances are that you'd just end up with a connection prob after changing ports.

I'm sure this isn't what you want to hear but it will save you the trouble of more port forwarding etc if it's all going to be futile anyway