Nokia Pop-Port to 3.5mm HeadPhones

"WARNING! The mod described on this page is unofficial and comes with no warranty whatsoever. You should only attempt it if you know what you are doing. Doing something wrong here could cause you harm and/or destroy you phone and/or headset. Be careful. I'm not going tobe held liable for anything that happens to you."
This is the first think written in the article about turning one pair of HDS-3 headphones into a 3.5 mm socket adapter. All you need is one pair of headphones and one socket adapter and patience.
Read the full article about doing this at stewartb.com