Wilecoyotesg
May I make an alternative suggestion to your direct connect dilemma, rather than trying to exchange/copy files using two computers and one wifi modem why not connect the computers using a serial cable and use a utility like Laplink.
You will find it much easier than what you are trying to do and all your files will copy across in minutes.
Here is the URL:
LaplinkĀ® Software - PCmover - Overview
As for sharing your files with the P2P community, I suggest that you update your Java installation, on your old PC, to one of the later versions, i.e. V1.5.11 upwards. You may also need to update your LW as well but I suggest you put LW Basic (the free version) on your old PC.
UK Bob