you mentioned that ipconfig says dhcp is disabled, you need to check in services. right click on computer and chose manage, then services, find the dhcp entry and it should be set to start automatically. do you have a router? what is the dns set to on that? does your computer happen to have 2 nics? if so you could set up one for the internet, and the 2nd for your internal network, but may need to have a different subnet.