I have a Netgear RT314 router and 2 PCs connected to it. Currently I share internet access with it. I want to be able to transfer files from one computer to another and vice versa. What would be the best way to do so? One box is running Win98 the other is running Win2K/XP. I would also like the option of selecting which folders can be shared. Lastly, I want to be sure that both PCs are secure. In other words, not vulnerable to hackers (to the best that you can protect yourself.