I had windows XP media center EDITION and I just reformatted my computer and INSTALLED regular XP now I can't get on the internet, why is that? Can you be more specific? What kind of computer do you have? What kind of internet? Do you have a router?

My first guess would be that you're missing your network adapter drivers. Can you go to Device Manager (Rightclick "My Computer" > "Properties" > go to the "Hardware" tab > Click "Device Manager") and tell us if there is anything with a YELLOW exclamation mark (!) by it.The HP Media Center m7070n, DSL, no router just a modem connected to my computer. Anything elseIs there any software which you got from your service provider? If so, have you installed that YET? ALSO, have you checked for all driver updates available?Go into Device Manager and look for any Yellow Question/Exclamation Marks.You have to install the drivers from the cd you got when you buy the computer.
Do you see Local Area Connection? If not, then drivers are not installed for your network card.