OK, I have a Motorola SBG900 wirless surfboard.
I have tried to set up a static IP adress before,but it created a fatal conflict, so I haven't played with the settings since.
I am sure people can see my files, because I see files in the "uploads" window. If you want to check, I have put a 93.6kb JPEG file called "SUPERSTAR VIRGO" inmy shared folder. If you search for it, I am sure you will find it.
Let me know what you think about the ports thingy.