Hope you can help me. I was with a ISP in Ireland for about 1 year and would like to change. but i really don't want to buy a new modem every time i decide to change. My question is this, can i use my old modem with my new ISP, or are they locked to a particular ISP. And if they are locked, can they be unlocked. As it is a waste to leave a good (working) modem in a box.It is a Netopia 3347 wired and wireless.