I checked my firewall, firefox is in exceptions list, if that matters. Don't like ie, all major sites work fine-yahoo, msn, cnn, etc. I don't know what DHCP is. Not wireless. This just started recently, everything was fine before.
Anybody else on your network? DO you use a router? Have you contacted your ISP to see if they are screwing with their equipment? Any new software or hardware installed recently?
Yes i do have a router for my wifes laptop, but she's not having any trouble. I have downloaded different themes for firefox, thats the only thing new, I think. Maybe I'll try undoing that and see. Thanks alot for all the replies.