A while ago, we had used a dial-up connection on our desktop computer with Windows XP on it with no problems. Since then, the hard drive died out, and it was replaced by a new hard drive. Now, when I would try to use dial-up, I would get an error saying the modem is not found or busy. Do I need to re-install the modem or something? It should be inside the computer. When I look at the devices, it does not show any modems. Help would be greatly appreciated!