This is for those of you who need multiple addresses, and who need to return (for whatever reason) to previously used addresses. Depending on your ISP (I am with the 4th largest provider in the US), this may be a good method for you. I have cable broadband. Although my IP is dynamic, it hasn't changed for years (even powercycling my modem won't work). There is a very simple way to get around this. Spoof your MAC address. Your MAC address is a unique ID assigned to your network card or router. MY ISP for instance, sees the MAC address of my network card, and always assigns me the same address, even if my router or modem are off for extended periods of time. With a freeware program http://www.technitium.com/tmac/index.html You can, with ease, change this MAC address unlimited number of times. Say your ISP assigns you 220.127.116.11 with MAC address A You spoof your MAC address to Mac address B. If you reconnect, you will now see your IP address has changed to 18.104.22.168 Need a new address? Change your MAC address to C, and now your IP address is 22.214.171.124 But wait? Need to use the address 126.96.36.199 for some reason? Simply change the MAC address back again to MAC address B and viola! I know this is really elementary for most of you, but for those with little network experience I'm hoping it will be helpful. Note: SOME ISPS may contact you via phone for security reasons if they see your MAC address changing. I've done this hundred of times though, and it always works like a charm. If doing this raising questions with your ISP, simply tell them that you repair computers for a living, and that you connect these computers directly to the modem for updates, patches, installs etc. Most ISP's will not give a shit about this though. I never use proxies anymore. I keep a spreadsheet that keeps track of what accounts are tied to what IP address, and what MAC address I need to use to get back to that IP. You don't even need the freeware program to spoof your MAC address, but I recommend it, it always provides a VALID MAC address that way. If you decide to do it manually in windows it becomes a much larger pain in the ass because you have to enter each MAC address manually. I always power off my modem before changing the MAC address as well, just for good measure. Hope this helps!