Down below is the description given by microsoft. Was there another device installed on the PCI slot before you installed the modem. Try using a different slot maybe? Just out of curiosity...did you install nt on this compaq or did it come preinstalled that way? Are you sure the driver you have is for NT? You could try reinstalling remote access but I think that can be painful in NT.<br><br>633 The port is already in use or is not configured for Remote Access dialout.<br> <p>Ladin<br><a href=mailto:matchu_14@hotmail.com>matchu_14@hotmail.com</a><br><a href= > </a><br>Tech support for 1 1/2 years, build computers, messed with C, HTML, Working on Flash, Role-Playing Game Junkie (Diablo2)