I have had problems connecting by dial-up to my ISP and followed the modem tweaks found in Modem tweak guide which greatly helped my PC at home running WIN XP Home Edition. On a practically identical PC at my office, except with WIN XP Professional, I used the same tweaks and now cannot browse the web. I can reach my ISP and their web site and use e-mail, however, I cannot reach any other sites. Can someone please help?:disgust: Thanks.