I'm not sure what information to provide to help me figure out this problem, as I know very little about networking. I am not on wireless, I am hardwired directly to my dsl modem. I have worked with my ISP to see if it is a problem on their end, and they say it is not. I can also see the lights on my modem and it is indicating I am connected to the internet. But about once a day, I get disconnected. Rebooting my computer usually helps. My system is on Vista Home Premium. Basic specs http://www.trustedreviews.com/pcs/review/2008/06/09/Dell-XPS-630-Gaming-PC/p6 Thank you in advance for any troubleshooting tips you can help me with.